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Finding the Fourth Proportional to 252,686.57, 348,698.31 and 137,963.10

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Solution

The fourth proportional to 252,686.57, 348,698.31 and 137,963.10 is: 190,384.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,686.57 : 348,698.31 = 137,963.10 : x
  2. Step 2: Convert to fraction form
    252,686.57/348,698.31 = 137,963.10/x
  3. Step 3: Cross multiply
    252,686.57x = 348,698.31 × 137,963.10
  4. Step 4: Simplify right side
    252,686.57x = 48,107,497,379.05
  5. Step 5: Solve for x
    x = 48,107,497,379.05/252,686.57
  6. Step 6: Final answer
    x = 190,384.07

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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.