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Finding the Fourth Proportional to 485,436.84, 728,158.90 and 148,483.52

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Solution

The fourth proportional to 485,436.84, 728,158.90 and 148,483.52 is: 222,726.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,436.84 : 728,158.90 = 148,483.52 : x
  2. Step 2: Convert to fraction form
    485,436.84/728,158.90 = 148,483.52/x
  3. Step 3: Cross multiply
    485,436.84x = 728,158.90 × 148,483.52
  4. Step 4: Simplify right side
    485,436.84x = 108,119,596,591.33
  5. Step 5: Solve for x
    x = 108,119,596,591.33/485,436.84
  6. Step 6: Final answer
    x = 222,726.39

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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.