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Finding the Fourth Proportional to 520,060.30, 780,090.45 and 240,124.30

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Solution

The fourth proportional to 520,060.30, 780,090.45 and 240,124.30 is: 360,186.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,060.30 : 780,090.45 = 240,124.30 : x
  2. Step 2: Convert to fraction form
    520,060.30/780,090.45 = 240,124.30/x
  3. Step 3: Cross multiply
    520,060.30x = 780,090.45 × 240,124.30
  4. Step 4: Simplify right side
    520,060.30x = 187,318,673,242.94
  5. Step 5: Solve for x
    x = 187,318,673,242.94/520,060.30
  6. Step 6: Final answer
    x = 360,186.45

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Similar ratio
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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.