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Finding the Fourth Proportional to 402,018.41, 555,045.03 and 249,219.90

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Solution

The fourth proportional to 402,018.41, 555,045.03 and 249,219.90 is: 344,084.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,018.41 : 555,045.03 = 249,219.90 : x
  2. Step 2: Convert to fraction form
    402,018.41/555,045.03 = 249,219.90/x
  3. Step 3: Cross multiply
    402,018.41x = 555,045.03 × 249,219.90
  4. Step 4: Simplify right side
    402,018.41x = 138,328,266,872.10
  5. Step 5: Solve for x
    x = 138,328,266,872.10/402,018.41
  6. Step 6: Final answer
    x = 344,084.41

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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.