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Finding the Fourth Proportional to 247,017.64, 340,839.46 and 138,123.94

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Solution

The fourth proportional to 247,017.64, 340,839.46 and 138,123.94 is: 190,585.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,017.64 : 340,839.46 = 138,123.94 : x
  2. Step 2: Convert to fraction form
    247,017.64/340,839.46 = 138,123.94/x
  3. Step 3: Cross multiply
    247,017.64x = 340,839.46 × 138,123.94
  4. Step 4: Simplify right side
    247,017.64x = 47,078,089,122.67
  5. Step 5: Solve for x
    x = 47,078,089,122.67/247,017.64
  6. Step 6: Final answer
    x = 190,585.94

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.