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Finding the Fourth Proportional to 383,688.68, 575,585.52 and 130,901.28

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Solution

The fourth proportional to 383,688.68, 575,585.52 and 130,901.28 is: 196,369.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,688.68 : 575,585.52 = 130,901.28 : x
  2. Step 2: Convert to fraction form
    383,688.68/575,585.52 = 130,901.28/x
  3. Step 3: Cross multiply
    383,688.68x = 575,585.52 × 130,901.28
  4. Step 4: Simplify right side
    383,688.68x = 75,344,881,317.47
  5. Step 5: Solve for x
    x = 75,344,881,317.47/383,688.68
  6. Step 6: Final answer
    x = 196,369.83

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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.