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Finding the Fourth Proportional to 520,041.10, 780,061.65 and 240,105.10

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Solution

The fourth proportional to 520,041.10, 780,061.65 and 240,105.10 is: 360,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,041.10 : 780,061.65 = 240,105.10 : x
  2. Step 2: Convert to fraction form
    520,041.10/780,061.65 = 240,105.10/x
  3. Step 3: Cross multiply
    520,041.10x = 780,061.65 × 240,105.10
  4. Step 4: Simplify right side
    520,041.10x = 187,296,780,479.42
  5. Step 5: Solve for x
    x = 187,296,780,479.42/520,041.10
  6. Step 6: Final answer
    x = 360,157.65

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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.