Home / 259,310,413,075.12-388,985,236,723.84-80,254,509,972.16

Finding the Fourth Proportional to 259,310,413,075.12, 388,985,236,723.84 and 80,254,509,972.16

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Solution

The fourth proportional to 259,310,413,075.12, 388,985,236,723.84 and 80,254,509,972.16 is: 120,387,836,298.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,310,413,075.12 : 388,985,236,723.84 = 80,254,509,972.16 : x
  2. Step 2: Convert to fraction form
    259,310,413,075.12/388,985,236,723.84 = 80,254,509,972.16/x
  3. Step 3: Cross multiply
    259,310,413,075.12x = 388,985,236,723.84 × 80,254,509,972.16
  4. Step 4: Simplify right side
    259,310,413,075.12x = 31,217,819,559,676,438,642,688
  5. Step 5: Solve for x
    x = 31,217,819,559,676,438,642,688/259,310,413,075.12
  6. Step 6: Final answer
    x = 120,387,836,298.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.