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Finding the Fourth Proportional to 368,805.60, 553,132.80 and 102,499.20

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Solution

The fourth proportional to 368,805.60, 553,132.80 and 102,499.20 is: 153,727.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,805.60 : 553,132.80 = 102,499.20 : x
  2. Step 2: Convert to fraction form
    368,805.60/553,132.80 = 102,499.20/x
  3. Step 3: Cross multiply
    368,805.60x = 553,132.80 × 102,499.20
  4. Step 4: Simplify right side
    368,805.60x = 56,695,669,493.76
  5. Step 5: Solve for x
    x = 56,695,669,493.76/368,805.60
  6. Step 6: Final answer
    x = 153,727.79

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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.