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Finding the Fourth Proportional to 520,204.20, 779,787.90 and 239,231.40

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Solution

The fourth proportional to 520,204.20, 779,787.90 and 239,231.40 is: 358,608.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,204.20 : 779,787.90 = 239,231.40 : x
  2. Step 2: Convert to fraction form
    520,204.20/779,787.90 = 239,231.40/x
  3. Step 3: Cross multiply
    520,204.20x = 779,787.90 × 239,231.40
  4. Step 4: Simplify right side
    520,204.20x = 186,549,751,020.06
  5. Step 5: Solve for x
    x = 186,549,751,020.06/520,204.20
  6. Step 6: Final answer
    x = 358,608.70

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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.