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Finding the Fourth Proportional to 521,009.62, 781,514.43 and 147,032.62

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Solution

The fourth proportional to 521,009.62, 781,514.43 and 147,032.62 is: 220,548.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,009.62 : 781,514.43 = 147,032.62 : x
  2. Step 2: Convert to fraction form
    521,009.62/781,514.43 = 147,032.62/x
  3. Step 3: Cross multiply
    521,009.62x = 781,514.43 × 147,032.62
  4. Step 4: Simplify right side
    521,009.62x = 114,908,111,705.55
  5. Step 5: Solve for x
    x = 114,908,111,705.55/521,009.62
  6. Step 6: Final answer
    x = 220,548.93

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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.