Home / 520,102.20-780,153.30-240,166.20

Finding the Fourth Proportional to 520,102.20, 780,153.30 and 240,166.20

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Solution

The fourth proportional to 520,102.20, 780,153.30 and 240,166.20 is: 360,249.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,102.20 : 780,153.30 = 240,166.20 : x
  2. Step 2: Convert to fraction form
    520,102.20/780,153.30 = 240,166.20/x
  3. Step 3: Cross multiply
    520,102.20x = 780,153.30 × 240,166.20
  4. Step 4: Simplify right side
    520,102.20x = 187,366,453,478.46
  5. Step 5: Solve for x
    x = 187,366,453,478.46/520,102.20
  6. Step 6: Final answer
    x = 360,249.30

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Double scale
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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.