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Finding the Fourth Proportional to 216,729.02, 299,101.82 and 121,266.47

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Solution

The fourth proportional to 216,729.02, 299,101.82 and 121,266.47 is: 167,356.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,729.02 : 299,101.82 = 121,266.47 : x
  2. Step 2: Convert to fraction form
    216,729.02/299,101.82 = 121,266.47/x
  3. Step 3: Cross multiply
    216,729.02x = 299,101.82 × 121,266.47
  4. Step 4: Simplify right side
    216,729.02x = 36,271,020,340.95
  5. Step 5: Solve for x
    x = 36,271,020,340.95/216,729.02
  6. Step 6: Final answer
    x = 167,356.55

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.