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Finding the Fourth Proportional to 299,386.84, 448,691.28 and 121,686.88

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Solution

The fourth proportional to 299,386.84, 448,691.28 and 121,686.88 is: 182,372.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    299,386.84 : 448,691.28 = 121,686.88 : x
  2. Step 2: Convert to fraction form
    299,386.84/448,691.28 = 121,686.88/x
  3. Step 3: Cross multiply
    299,386.84x = 448,691.28 × 121,686.88
  4. Step 4: Simplify right side
    299,386.84x = 54,599,841,946.41
  5. Step 5: Solve for x
    x = 54,599,841,946.41/299,386.84
  6. Step 6: Final answer
    x = 182,372.22

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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.