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Finding the Fourth Proportional to 284,014.01, 391,925.65 and 154,944.80

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Solution

The fourth proportional to 284,014.01, 391,925.65 and 154,944.80 is: 213,816.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,014.01 : 391,925.65 = 154,944.80 : x
  2. Step 2: Convert to fraction form
    284,014.01/391,925.65 = 154,944.80/x
  3. Step 3: Cross multiply
    284,014.01x = 391,925.65 × 154,944.80
  4. Step 4: Simplify right side
    284,014.01x = 60,726,841,454.12
  5. Step 5: Solve for x
    x = 60,726,841,454.12/284,014.01
  6. Step 6: Final answer
    x = 213,816.36

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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.