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Finding the Fourth Proportional to 253,451.34, 380,248.83 and 126,938.79

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Solution

The fourth proportional to 253,451.34, 380,248.83 and 126,938.79 is: 190,444.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    253,451.34 : 380,248.83 = 126,938.79 : x
  2. Step 2: Convert to fraction form
    253,451.34/380,248.83 = 126,938.79/x
  3. Step 3: Cross multiply
    253,451.34x = 380,248.83 × 126,938.79
  4. Step 4: Simplify right side
    253,451.34x = 48,268,326,379.12
  5. Step 5: Solve for x
    x = 48,268,326,379.12/253,451.34
  6. Step 6: Final answer
    x = 190,444.16

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1.5x scale

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.