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Finding the Fourth Proportional to 252,271, 348,136.70 and 137,548.72

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Solution

The fourth proportional to 252,271, 348,136.70 and 137,548.72 is: 189,818.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,271 : 348,136.70 = 137,548.72 : x
  2. Step 2: Convert to fraction form
    252,271/348,136.70 = 137,548.72/x
  3. Step 3: Cross multiply
    252,271x = 348,136.70 × 137,548.72
  4. Step 4: Simplify right side
    252,271x = 47,885,757,470.02
  5. Step 5: Solve for x
    x = 47,885,757,470.02/252,271
  6. Step 6: Final answer
    x = 189,818.72

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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.