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Finding the Fourth Proportional to 520,096.40, 780,147.03 and 220,501.70

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Solution

The fourth proportional to 520,096.40, 780,147.03 and 220,501.70 is: 330,753.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,096.40 : 780,147.03 = 220,501.70 : x
  2. Step 2: Convert to fraction form
    520,096.40/780,147.03 = 220,501.70/x
  3. Step 3: Cross multiply
    520,096.40x = 780,147.03 × 220,501.70
  4. Step 4: Simplify right side
    520,096.40x = 172,023,746,364.95
  5. Step 5: Solve for x
    x = 172,023,746,364.95/520,096.40
  6. Step 6: Final answer
    x = 330,753.58

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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.