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Finding the Fourth Proportional to 520,098.60, 780,147.90 and 240,162.60

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Solution

The fourth proportional to 520,098.60, 780,147.90 and 240,162.60 is: 360,243.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,098.60 : 780,147.90 = 240,162.60 : x
  2. Step 2: Convert to fraction form
    520,098.60/780,147.90 = 240,162.60/x
  3. Step 3: Cross multiply
    520,098.60x = 780,147.90 × 240,162.60
  4. Step 4: Simplify right side
    520,098.60x = 187,362,348,048.54
  5. Step 5: Solve for x
    x = 187,362,348,048.54/520,098.60
  6. Step 6: Final answer
    x = 360,243.90

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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.