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Finding the Fourth Proportional to 259,545.80, 389,901.90 and 249,631.40

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Solution

The fourth proportional to 259,545.80, 389,901.90 and 249,631.40 is: 375,008.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,545.80 : 389,901.90 = 249,631.40 : x
  2. Step 2: Convert to fraction form
    259,545.80/389,901.90 = 249,631.40/x
  3. Step 3: Cross multiply
    259,545.80x = 389,901.90 × 249,631.40
  4. Step 4: Simplify right side
    259,545.80x = 97,331,757,159.66
  5. Step 5: Solve for x
    x = 97,331,757,159.66/259,545.80
  6. Step 6: Final answer
    x = 375,008.02

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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.