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Finding the Fourth Proportional to 439,347.48, 606,280.28 and 258,078

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Solution

The fourth proportional to 439,347.48, 606,280.28 and 258,078 is: 356,136.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,347.48 : 606,280.28 = 258,078 : x
  2. Step 2: Convert to fraction form
    439,347.48/606,280.28 = 258,078/x
  3. Step 3: Cross multiply
    439,347.48x = 606,280.28 × 258,078
  4. Step 4: Simplify right side
    439,347.48x = 156,467,602,101.84
  5. Step 5: Solve for x
    x = 156,467,602,101.84/439,347.48
  6. Step 6: Final answer
    x = 356,136.34

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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.