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Finding the Fourth Proportional to 438,671.44, 658,216.36 and 238,987.42

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Solution

The fourth proportional to 438,671.44, 658,216.36 and 238,987.42 is: 358,595.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,671.44 : 658,216.36 = 238,987.42 : x
  2. Step 2: Convert to fraction form
    438,671.44/658,216.36 = 238,987.42/x
  3. Step 3: Cross multiply
    438,671.44x = 658,216.36 × 238,987.42
  4. Step 4: Simplify right side
    438,671.44x = 157,305,429,678.19
  5. Step 5: Solve for x
    x = 157,305,429,678.19/438,671.44
  6. Step 6: Final answer
    x = 358,595.10

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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.