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Finding the Fourth Proportional to 488,687.31, 732,579.93 and 338,998.23

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Solution

The fourth proportional to 488,687.31, 732,579.93 and 338,998.23 is: 508,184.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    488,687.31 : 732,579.93 = 338,998.23 : x
  2. Step 2: Convert to fraction form
    488,687.31/732,579.93 = 338,998.23/x
  3. Step 3: Cross multiply
    488,687.31x = 732,579.93 × 338,998.23
  4. Step 4: Simplify right side
    488,687.31x = 248,343,299,603.52
  5. Step 5: Solve for x
    x = 248,343,299,603.52/488,687.31
  6. Step 6: Final answer
    x = 508,184.47

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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.