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Finding the Fourth Proportional to 398,169.40, 596,447.70 and 247,948.60

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Solution

The fourth proportional to 398,169.40, 596,447.70 and 247,948.60 is: 371,420.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,169.40 : 596,447.70 = 247,948.60 : x
  2. Step 2: Convert to fraction form
    398,169.40/596,447.70 = 247,948.60/x
  3. Step 3: Cross multiply
    398,169.40x = 596,447.70 × 247,948.60
  4. Step 4: Simplify right side
    398,169.40x = 147,888,372,188.22
  5. Step 5: Solve for x
    x = 147,888,372,188.22/398,169.40
  6. Step 6: Final answer
    x = 371,420.74

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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.