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Finding the Fourth Proportional to 438,883.47, 658,257.95 and 139,325.22

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Solution

The fourth proportional to 438,883.47, 658,257.95 and 139,325.22 is: 208,966.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,883.47 : 658,257.95 = 139,325.22 : x
  2. Step 2: Convert to fraction form
    438,883.47/658,257.95 = 139,325.22/x
  3. Step 3: Cross multiply
    438,883.47x = 658,257.95 × 139,325.22
  4. Step 4: Simplify right side
    438,883.47x = 91,711,934,048.81
  5. Step 5: Solve for x
    x = 91,711,934,048.81/438,883.47
  6. Step 6: Final answer
    x = 208,966.48

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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.