Home / 305,461,918.80-421,551,329.13-180,019,409.04

Finding the Fourth Proportional to 305,461,918.80, 421,551,329.13 and 180,019,409.04

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Solution

The fourth proportional to 305,461,918.80, 421,551,329.13 and 180,019,409.04 is: 248,434,965.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,461,918.80 : 421,551,329.13 = 180,019,409.04 : x
  2. Step 2: Convert to fraction form
    305,461,918.80/421,551,329.13 = 180,019,409.04/x
  3. Step 3: Cross multiply
    305,461,918.80x = 421,551,329.13 × 180,019,409.04
  4. Step 4: Simplify right side
    305,461,918.80x = 75,887,421,150,009,136
  5. Step 5: Solve for x
    x = 75,887,421,150,009,136/305,461,918.80
  6. Step 6: Final answer
    x = 248,434,965.14

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.