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Finding the Fourth Proportional to 239,842.39, 359,643.10 and 79,861.77

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Solution

The fourth proportional to 239,842.39, 359,643.10 and 79,861.77 is: 119,752.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    239,842.39 : 359,643.10 = 79,861.77 : x
  2. Step 2: Convert to fraction form
    239,842.39/359,643.10 = 79,861.77/x
  3. Step 3: Cross multiply
    239,842.39x = 359,643.10 × 79,861.77
  4. Step 4: Simplify right side
    239,842.39x = 28,721,734,534.29
  5. Step 5: Solve for x
    x = 28,721,734,534.29/239,842.39
  6. Step 6: Final answer
    x = 119,752.54

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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.