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Finding the Fourth Proportional to 520,236.90, 780,417.90 and 183,207.92

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Solution

The fourth proportional to 520,236.90, 780,417.90 and 183,207.92 is: 274,833.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,236.90 : 780,417.90 = 183,207.92 : x
  2. Step 2: Convert to fraction form
    520,236.90/780,417.90 = 183,207.92/x
  3. Step 3: Cross multiply
    520,236.90x = 780,417.90 × 183,207.92
  4. Step 4: Simplify right side
    520,236.90x = 142,978,736,287.68
  5. Step 5: Solve for x
    x = 142,978,736,287.68/520,236.90
  6. Step 6: Final answer
    x = 274,833.90

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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.