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Finding the Fourth Proportional to 478,613.20, 717,781.56 and 163,063.12

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Solution

The fourth proportional to 478,613.20, 717,781.56 and 163,063.12 is: 244,547.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,613.20 : 717,781.56 = 163,063.12 : x
  2. Step 2: Convert to fraction form
    478,613.20/717,781.56 = 163,063.12/x
  3. Step 3: Cross multiply
    478,613.20x = 717,781.56 × 163,063.12
  4. Step 4: Simplify right side
    478,613.20x = 117,043,700,652.07
  5. Step 5: Solve for x
    x = 117,043,700,652.07/478,613.20
  6. Step 6: Final answer
    x = 244,547.58

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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.