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Finding the Fourth Proportional to 310,636.68, 428,676.42 and 176,500.68

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Solution

The fourth proportional to 310,636.68, 428,676.42 and 176,500.68 is: 243,569.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,636.68 : 428,676.42 = 176,500.68 : x
  2. Step 2: Convert to fraction form
    310,636.68/428,676.42 = 176,500.68/x
  3. Step 3: Cross multiply
    310,636.68x = 428,676.42 × 176,500.68
  4. Step 4: Simplify right side
    310,636.68x = 75,661,679,629.97
  5. Step 5: Solve for x
    x = 75,661,679,629.97/310,636.68
  6. Step 6: Final answer
    x = 243,569.69

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1.5x scale

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.