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Finding the Fourth Proportional to 235,348.76, 353,173.26 and 85,574.70

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Solution

The fourth proportional to 235,348.76, 353,173.26 and 85,574.70 is: 128,416.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    235,348.76 : 353,173.26 = 85,574.70 : x
  2. Step 2: Convert to fraction form
    235,348.76/353,173.26 = 85,574.70/x
  3. Step 3: Cross multiply
    235,348.76x = 353,173.26 × 85,574.70
  4. Step 4: Simplify right side
    235,348.76x = 30,222,695,772.52
  5. Step 5: Solve for x
    x = 30,222,695,772.52/235,348.76
  6. Step 6: Final answer
    x = 128,416.63

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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.