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Finding the Fourth Proportional to 438,739.50, 658,109.34 and 158,256.72

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Solution

The fourth proportional to 438,739.50, 658,109.34 and 158,256.72 is: 237,385.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,739.50 : 658,109.34 = 158,256.72 : x
  2. Step 2: Convert to fraction form
    438,739.50/658,109.34 = 158,256.72/x
  3. Step 3: Cross multiply
    438,739.50x = 658,109.34 × 158,256.72
  4. Step 4: Simplify right side
    438,739.50x = 104,150,225,549.77
  5. Step 5: Solve for x
    x = 104,150,225,549.77/438,739.50
  6. Step 6: Final answer
    x = 237,385.11

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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.