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Finding the Fourth Proportional to 478,135.71, 717,088.75 and 141,085.29

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Solution

The fourth proportional to 478,135.71, 717,088.75 and 141,085.29 is: 211,594.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,135.71 : 717,088.75 = 141,085.29 : x
  2. Step 2: Convert to fraction form
    478,135.71/717,088.75 = 141,085.29/x
  3. Step 3: Cross multiply
    478,135.71x = 717,088.75 × 141,085.29
  4. Step 4: Simplify right side
    478,135.71x = 101,170,676,585.86
  5. Step 5: Solve for x
    x = 101,170,676,585.86/478,135.71
  6. Step 6: Final answer
    x = 211,594.06

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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.