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Finding the Fourth Proportional to 638,842.50, 958,425.75 and 239,484.42

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Solution

The fourth proportional to 638,842.50, 958,425.75 and 239,484.42 is: 359,287.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,842.50 : 958,425.75 = 239,484.42 : x
  2. Step 2: Convert to fraction form
    638,842.50/958,425.75 = 239,484.42/x
  3. Step 3: Cross multiply
    638,842.50x = 958,425.75 × 239,484.42
  4. Step 4: Simplify right side
    638,842.50x = 229,528,034,851.82
  5. Step 5: Solve for x
    x = 229,528,034,851.82/638,842.50
  6. Step 6: Final answer
    x = 359,287.36

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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.