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Finding the Fourth Proportional to 522,257.80, 783,386.70 and 148,232.20

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Solution

The fourth proportional to 522,257.80, 783,386.70 and 148,232.20 is: 222,348.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    522,257.80 : 783,386.70 = 148,232.20 : x
  2. Step 2: Convert to fraction form
    522,257.80/783,386.70 = 148,232.20/x
  3. Step 3: Cross multiply
    522,257.80x = 783,386.70 × 148,232.20
  4. Step 4: Simplify right side
    522,257.80x = 116,123,133,991.74
  5. Step 5: Solve for x
    x = 116,123,133,991.74/522,257.80
  6. Step 6: Final answer
    x = 222,348.30

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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.