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Finding the Fourth Proportional to 249,113.70, 373,670.55 and 137,139.30

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Solution

The fourth proportional to 249,113.70, 373,670.55 and 137,139.30 is: 205,708.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,113.70 : 373,670.55 = 137,139.30 : x
  2. Step 2: Convert to fraction form
    249,113.70/373,670.55 = 137,139.30/x
  3. Step 3: Cross multiply
    249,113.70x = 373,670.55 × 137,139.30
  4. Step 4: Simplify right side
    249,113.70x = 51,244,917,657.62
  5. Step 5: Solve for x
    x = 51,244,917,657.62/249,113.70
  6. Step 6: Final answer
    x = 205,708.95

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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.