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Finding the Fourth Proportional to 520,824.80, 781,237.20 and 146,847.80

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Solution

The fourth proportional to 520,824.80, 781,237.20 and 146,847.80 is: 220,271.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,824.80 : 781,237.20 = 146,847.80 : x
  2. Step 2: Convert to fraction form
    520,824.80/781,237.20 = 146,847.80/x
  3. Step 3: Cross multiply
    520,824.80x = 781,237.20 × 146,847.80
  4. Step 4: Simplify right side
    520,824.80x = 114,722,964,098.16
  5. Step 5: Solve for x
    x = 114,722,964,098.16/520,824.80
  6. Step 6: Final answer
    x = 220,271.70

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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.