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Finding the Fourth Proportional to 575,123.40, 862,685.10 and 154,441.80

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Solution

The fourth proportional to 575,123.40, 862,685.10 and 154,441.80 is: 231,662.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    575,123.40 : 862,685.10 = 154,441.80 : x
  2. Step 2: Convert to fraction form
    575,123.40/862,685.10 = 154,441.80/x
  3. Step 3: Cross multiply
    575,123.40x = 862,685.10 × 154,441.80
  4. Step 4: Simplify right side
    575,123.40x = 133,234,639,677.18
  5. Step 5: Solve for x
    x = 133,234,639,677.18/575,123.40
  6. Step 6: Final answer
    x = 231,662.70

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Double scale
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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.