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Finding the Fourth Proportional to 216,838.76, 299,250 and 121,344.60

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Solution

The fourth proportional to 216,838.76, 299,250 and 121,344.60 is: 167,462.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,838.76 : 299,250 = 121,344.60 : x
  2. Step 2: Convert to fraction form
    216,838.76/299,250 = 121,344.60/x
  3. Step 3: Cross multiply
    216,838.76x = 299,250 × 121,344.60
  4. Step 4: Simplify right side
    216,838.76x = 36,312,371,550
  5. Step 5: Solve for x
    x = 36,312,371,550/216,838.76
  6. Step 6: Final answer
    x = 167,462.55

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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.