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Finding the Fourth Proportional to 453,679.18, 626,072.40 and 249,725.76

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Solution

The fourth proportional to 453,679.18, 626,072.40 and 249,725.76 is: 344,618.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    453,679.18 : 626,072.40 = 249,725.76 : x
  2. Step 2: Convert to fraction form
    453,679.18/626,072.40 = 249,725.76/x
  3. Step 3: Cross multiply
    453,679.18x = 626,072.40 × 249,725.76
  4. Step 4: Simplify right side
    453,679.18x = 156,346,404,478.47
  5. Step 5: Solve for x
    x = 156,346,404,478.47/453,679.18
  6. Step 6: Final answer
    x = 344,618.86

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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.