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Finding the Fourth Proportional to 472,430.76, 708,500.76 and 135,381.12

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Solution

The fourth proportional to 472,430.76, 708,500.76 and 135,381.12 is: 203,030.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,430.76 : 708,500.76 = 135,381.12 : x
  2. Step 2: Convert to fraction form
    472,430.76/708,500.76 = 135,381.12/x
  3. Step 3: Cross multiply
    472,430.76x = 708,500.76 × 135,381.12
  4. Step 4: Simplify right side
    472,430.76x = 95,917,626,409.65
  5. Step 5: Solve for x
    x = 95,917,626,409.65/472,430.76
  6. Step 6: Final answer
    x = 203,030.02

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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.