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Finding the Fourth Proportional to 478,578.20, 717,818.70 and 163,030.55

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Solution

The fourth proportional to 478,578.20, 717,818.70 and 163,030.55 is: 244,529.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,578.20 : 717,818.70 = 163,030.55 : x
  2. Step 2: Convert to fraction form
    478,578.20/717,818.70 = 163,030.55/x
  3. Step 3: Cross multiply
    478,578.20x = 717,818.70 × 163,030.55
  4. Step 4: Simplify right side
    478,578.20x = 117,026,377,461.29
  5. Step 5: Solve for x
    x = 117,026,377,461.29/478,578.20
  6. Step 6: Final answer
    x = 244,529.27

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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.