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Finding the Fourth Proportional to 289,337.70, 434,006.55 and 249,939.30

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Solution

The fourth proportional to 289,337.70, 434,006.55 and 249,939.30 is: 374,908.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,337.70 : 434,006.55 = 249,939.30 : x
  2. Step 2: Convert to fraction form
    289,337.70/434,006.55 = 249,939.30/x
  3. Step 3: Cross multiply
    289,337.70x = 434,006.55 × 249,939.30
  4. Step 4: Simplify right side
    289,337.70x = 108,475,293,302.42
  5. Step 5: Solve for x
    x = 108,475,293,302.42/289,337.70
  6. Step 6: Final answer
    x = 374,908.95

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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.