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Finding the Fourth Proportional to 249,439.80, 374,086.80 and 89,497.20

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Solution

The fourth proportional to 249,439.80, 374,086.80 and 89,497.20 is: 134,219.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,439.80 : 374,086.80 = 89,497.20 : x
  2. Step 2: Convert to fraction form
    249,439.80/374,086.80 = 89,497.20/x
  3. Step 3: Cross multiply
    249,439.80x = 374,086.80 × 89,497.20
  4. Step 4: Simplify right side
    249,439.80x = 33,479,721,156.96
  5. Step 5: Solve for x
    x = 33,479,721,156.96/249,439.80
  6. Step 6: Final answer
    x = 134,219.64

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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.