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Finding the Fourth Proportional to 547,298.70, 820,948.05 and 148,001.10

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Solution

The fourth proportional to 547,298.70, 820,948.05 and 148,001.10 is: 222,001.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,298.70 : 820,948.05 = 148,001.10 : x
  2. Step 2: Convert to fraction form
    547,298.70/820,948.05 = 148,001.10/x
  3. Step 3: Cross multiply
    547,298.70x = 820,948.05 × 148,001.10
  4. Step 4: Simplify right side
    547,298.70x = 121,501,214,442.86
  5. Step 5: Solve for x
    x = 121,501,214,442.86/547,298.70
  6. Step 6: Final answer
    x = 222,001.65

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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.