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Finding the Fourth Proportional to 339,572.76, 509,358.60 and 90,254.76

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Solution

The fourth proportional to 339,572.76, 509,358.60 and 90,254.76 is: 135,382.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    339,572.76 : 509,358.60 = 90,254.76 : x
  2. Step 2: Convert to fraction form
    339,572.76/509,358.60 = 90,254.76/x
  3. Step 3: Cross multiply
    339,572.76x = 509,358.60 × 90,254.76
  4. Step 4: Simplify right side
    339,572.76x = 45,972,038,196.94
  5. Step 5: Solve for x
    x = 45,972,038,196.94/339,572.76
  6. Step 6: Final answer
    x = 135,382.00

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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.