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Finding the Fourth Proportional to 520,892.80, 781,339.20 and 146,867.20

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Solution

The fourth proportional to 520,892.80, 781,339.20 and 146,867.20 is: 220,300.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,892.80 : 781,339.20 = 146,867.20 : x
  2. Step 2: Convert to fraction form
    520,892.80/781,339.20 = 146,867.20/x
  3. Step 3: Cross multiply
    520,892.80x = 781,339.20 × 146,867.20
  4. Step 4: Simplify right side
    520,892.80x = 114,753,100,554.24
  5. Step 5: Solve for x
    x = 114,753,100,554.24/520,892.80
  6. Step 6: Final answer
    x = 220,300.80

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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.