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Finding the Fourth Proportional to 520,200.70, 780,301.05 and 165,250.60

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Solution

The fourth proportional to 520,200.70, 780,301.05 and 165,250.60 is: 247,875.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,200.70 : 780,301.05 = 165,250.60 : x
  2. Step 2: Convert to fraction form
    520,200.70/780,301.05 = 165,250.60/x
  3. Step 3: Cross multiply
    520,200.70x = 780,301.05 × 165,250.60
  4. Step 4: Simplify right side
    520,200.70x = 128,945,216,693.13
  5. Step 5: Solve for x
    x = 128,945,216,693.13/520,200.70
  6. Step 6: Final answer
    x = 247,875.90

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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.