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Finding the Fourth Proportional to 385,503.60, 577,477.80 and 219,097.20

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Solution

The fourth proportional to 385,503.60, 577,477.80 and 219,097.20 is: 328,203.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,503.60 : 577,477.80 = 219,097.20 : x
  2. Step 2: Convert to fraction form
    385,503.60/577,477.80 = 219,097.20/x
  3. Step 3: Cross multiply
    385,503.60x = 577,477.80 × 219,097.20
  4. Step 4: Simplify right side
    385,503.60x = 126,523,769,042.16
  5. Step 5: Solve for x
    x = 126,523,769,042.16/385,503.60
  6. Step 6: Final answer
    x = 328,203.86

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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.