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Finding the Fourth Proportional to 252,011.60, 347,772.12 and 138,838.40

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Solution

The fourth proportional to 252,011.60, 347,772.12 and 138,838.40 is: 191,594.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,011.60 : 347,772.12 = 138,838.40 : x
  2. Step 2: Convert to fraction form
    252,011.60/347,772.12 = 138,838.40/x
  3. Step 3: Cross multiply
    252,011.60x = 347,772.12 × 138,838.40
  4. Step 4: Simplify right side
    252,011.60x = 48,284,124,705.41
  5. Step 5: Solve for x
    x = 48,284,124,705.41/252,011.60
  6. Step 6: Final answer
    x = 191,594.85

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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.