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Finding the Fourth Proportional to 439,339.48, 606,269.24 and 258,070

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Solution

The fourth proportional to 439,339.48, 606,269.24 and 258,070 is: 356,125.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,339.48 : 606,269.24 = 258,070 : x
  2. Step 2: Convert to fraction form
    439,339.48/606,269.24 = 258,070/x
  3. Step 3: Cross multiply
    439,339.48x = 606,269.24 × 258,070
  4. Step 4: Simplify right side
    439,339.48x = 156,459,902,766.80
  5. Step 5: Solve for x
    x = 156,459,902,766.80/439,339.48
  6. Step 6: Final answer
    x = 356,125.30

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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.