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Finding the Fourth Proportional to 245,656.96, 339,002.56 and 138,226.88

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Solution

The fourth proportional to 245,656.96, 339,002.56 and 138,226.88 is: 190,750.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,656.96 : 339,002.56 = 138,226.88 : x
  2. Step 2: Convert to fraction form
    245,656.96/339,002.56 = 138,226.88/x
  3. Step 3: Cross multiply
    245,656.96x = 339,002.56 × 138,226.88
  4. Step 4: Simplify right side
    245,656.96x = 46,859,266,180.81
  5. Step 5: Solve for x
    x = 46,859,266,180.81/245,656.96
  6. Step 6: Final answer
    x = 190,750.82

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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.