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Finding the Fourth Proportional to 368,864.80, 553,167.60 and 169,280.80

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Solution

The fourth proportional to 368,864.80, 553,167.60 and 169,280.80 is: 253,861.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,864.80 : 553,167.60 = 169,280.80 : x
  2. Step 2: Convert to fraction form
    368,864.80/553,167.60 = 169,280.80/x
  3. Step 3: Cross multiply
    368,864.80x = 553,167.60 × 169,280.80
  4. Step 4: Simplify right side
    368,864.80x = 93,640,653,862.08
  5. Step 5: Solve for x
    x = 93,640,653,862.08/368,864.80
  6. Step 6: Final answer
    x = 253,861.72

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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.