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Finding the Fourth Proportional to 292,987.14, 439,493.48 and 143,353.41

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Solution

The fourth proportional to 292,987.14, 439,493.48 and 143,353.41 is: 215,036.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,987.14 : 439,493.48 = 143,353.41 : x
  2. Step 2: Convert to fraction form
    292,987.14/439,493.48 = 143,353.41/x
  3. Step 3: Cross multiply
    292,987.14x = 439,493.48 × 143,353.41
  4. Step 4: Simplify right side
    292,987.14x = 63,002,888,314.00
  5. Step 5: Solve for x
    x = 63,002,888,314.00/292,987.14
  6. Step 6: Final answer
    x = 215,036.36

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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.