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Finding the Fourth Proportional to 520,848.20, 781,272.30 and 146,871.20

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Solution

The fourth proportional to 520,848.20, 781,272.30 and 146,871.20 is: 220,306.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,848.20 : 781,272.30 = 146,871.20 : x
  2. Step 2: Convert to fraction form
    520,848.20/781,272.30 = 146,871.20/x
  3. Step 3: Cross multiply
    520,848.20x = 781,272.30 × 146,871.20
  4. Step 4: Simplify right side
    520,848.20x = 114,746,400,227.76
  5. Step 5: Solve for x
    x = 114,746,400,227.76/520,848.20
  6. Step 6: Final answer
    x = 220,306.80

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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.