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Finding the Fourth Proportional to 347,637.40, 521,244.90 and 137,032.60

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Solution

The fourth proportional to 347,637.40, 521,244.90 and 137,032.60 is: 205,465.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,637.40 : 521,244.90 = 137,032.60 : x
  2. Step 2: Convert to fraction form
    347,637.40/521,244.90 = 137,032.60/x
  3. Step 3: Cross multiply
    347,637.40x = 521,244.90 × 137,032.60
  4. Step 4: Simplify right side
    347,637.40x = 71,427,543,883.74
  5. Step 5: Solve for x
    x = 71,427,543,883.74/347,637.40
  6. Step 6: Final answer
    x = 205,465.65

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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.