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Finding the Fourth Proportional to 325,343.40, 487,621.44 and 147,671.52

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Solution

The fourth proportional to 325,343.40, 487,621.44 and 147,671.52 is: 221,328.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,343.40 : 487,621.44 = 147,671.52 : x
  2. Step 2: Convert to fraction form
    325,343.40/487,621.44 = 147,671.52/x
  3. Step 3: Cross multiply
    325,343.40x = 487,621.44 × 147,671.52
  4. Step 4: Simplify right side
    325,343.40x = 72,007,799,229.39
  5. Step 5: Solve for x
    x = 72,007,799,229.39/325,343.40
  6. Step 6: Final answer
    x = 221,328.60

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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.