Home / 313,686,318.70-432,884,730.87-172,554,507.86

Finding the Fourth Proportional to 313,686,318.70, 432,884,730.87 and 172,554,507.86

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Solution

The fourth proportional to 313,686,318.70, 432,884,730.87 and 172,554,507.86 is: 238,123,906.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,686,318.70 : 432,884,730.87 = 172,554,507.86 : x
  2. Step 2: Convert to fraction form
    313,686,318.70/432,884,730.87 = 172,554,507.86/x
  3. Step 3: Cross multiply
    313,686,318.70x = 432,884,730.87 × 172,554,507.86
  4. Step 4: Simplify right side
    313,686,318.70x = 74,696,211,695,381,408
  5. Step 5: Solve for x
    x = 74,696,211,695,381,408/313,686,318.70
  6. Step 6: Final answer
    x = 238,123,906.73

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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.