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Finding the Fourth Proportional to 615,269.80, 922,904.70 and 165,989.80

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Solution

The fourth proportional to 615,269.80, 922,904.70 and 165,989.80 is: 248,984.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    615,269.80 : 922,904.70 = 165,989.80 : x
  2. Step 2: Convert to fraction form
    615,269.80/922,904.70 = 165,989.80/x
  3. Step 3: Cross multiply
    615,269.80x = 922,904.70 × 165,989.80
  4. Step 4: Simplify right side
    615,269.80x = 153,192,766,572.06
  5. Step 5: Solve for x
    x = 153,192,766,572.06/615,269.80
  6. Step 6: Final answer
    x = 248,984.70

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Similar ratio
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1.5x scale

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.