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Finding the Fourth Proportional to 292,298.49, 438,398.33 and 81,888.03

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Solution

The fourth proportional to 292,298.49, 438,398.33 and 81,888.03 is: 122,818.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,298.49 : 438,398.33 = 81,888.03 : x
  2. Step 2: Convert to fraction form
    292,298.49/438,398.33 = 81,888.03/x
  3. Step 3: Cross multiply
    292,298.49x = 438,398.33 × 81,888.03
  4. Step 4: Simplify right side
    292,298.49x = 35,899,575,189.55
  5. Step 5: Solve for x
    x = 35,899,575,189.55/292,298.49
  6. Step 6: Final answer
    x = 122,818.20

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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.