Home / 289,535,073.21-399,561,075.86-157,376,380.68

Finding the Fourth Proportional to 289,535,073.21, 399,561,075.86 and 157,376,380.68

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Solution

The fourth proportional to 289,535,073.21, 399,561,075.86 and 157,376,380.68 is: 217,180,859.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,535,073.21 : 399,561,075.86 = 157,376,380.68 : x
  2. Step 2: Convert to fraction form
    289,535,073.21/399,561,075.86 = 157,376,380.68/x
  3. Step 3: Cross multiply
    289,535,073.21x = 399,561,075.86 × 157,376,380.68
  4. Step 4: Simplify right side
    289,535,073.21x = 62,881,475,978,666,840
  5. Step 5: Solve for x
    x = 62,881,475,978,666,840/289,535,073.21
  6. Step 6: Final answer
    x = 217,180,859.24

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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.