Home / 289,172,320.55-399,053,720.03-163,721,281.49

Finding the Fourth Proportional to 289,172,320.55, 399,053,720.03 and 163,721,281.49

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Solution

The fourth proportional to 289,172,320.55, 399,053,720.03 and 163,721,281.49 is: 225,933,057.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,172,320.55 : 399,053,720.03 = 163,721,281.49 : x
  2. Step 2: Convert to fraction form
    289,172,320.55/399,053,720.03 = 163,721,281.49/x
  3. Step 3: Cross multiply
    289,172,320.55x = 399,053,720.03 × 163,721,281.49
  4. Step 4: Simplify right side
    289,172,320.55x = 65,333,586,423,849,408
  5. Step 5: Solve for x
    x = 65,333,586,423,849,408/289,172,320.55
  6. Step 6: Final answer
    x = 225,933,057.15

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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.