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Finding the Fourth Proportional to 339,560.76, 509,340.60 and 90,242.76

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Solution

The fourth proportional to 339,560.76, 509,340.60 and 90,242.76 is: 135,364.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,560.76 : 509,340.60 = 90,242.76 : x
  2. Step 2: Convert to fraction form
    339,560.76/509,340.60 = 90,242.76/x
  3. Step 3: Cross multiply
    339,560.76x = 509,340.60 × 90,242.76
  4. Step 4: Simplify right side
    339,560.76x = 45,964,301,524.06
  5. Step 5: Solve for x
    x = 45,964,301,524.06/339,560.76
  6. Step 6: Final answer
    x = 135,364.00

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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.