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Finding the Fourth Proportional to 242,470.91, 334,609.63 and 140,555.40

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Solution

The fourth proportional to 242,470.91, 334,609.63 and 140,555.40 is: 193,966.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,470.91 : 334,609.63 = 140,555.40 : x
  2. Step 2: Convert to fraction form
    242,470.91/334,609.63 = 140,555.40/x
  3. Step 3: Cross multiply
    242,470.91x = 334,609.63 × 140,555.40
  4. Step 4: Simplify right side
    242,470.91x = 47,031,188,715.45
  5. Step 5: Solve for x
    x = 47,031,188,715.45/242,470.91
  6. Step 6: Final answer
    x = 193,966.31

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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.