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Finding the Fourth Proportional to 249,720.81, 344,648.43 and 140,847.50

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Solution

The fourth proportional to 249,720.81, 344,648.43 and 140,847.50 is: 194,388.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,720.81 : 344,648.43 = 140,847.50 : x
  2. Step 2: Convert to fraction form
    249,720.81/344,648.43 = 140,847.50/x
  3. Step 3: Cross multiply
    249,720.81x = 344,648.43 × 140,847.50
  4. Step 4: Simplify right side
    249,720.81x = 48,542,869,744.43
  5. Step 5: Solve for x
    x = 48,542,869,744.43/249,720.81
  6. Step 6: Final answer
    x = 194,388.56

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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.