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Finding the Fourth Proportional to 388,574.40, 582,746.40 and 151,780.80

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Solution

The fourth proportional to 388,574.40, 582,746.40 and 151,780.80 is: 227,626.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,574.40 : 582,746.40 = 151,780.80 : x
  2. Step 2: Convert to fraction form
    388,574.40/582,746.40 = 151,780.80/x
  3. Step 3: Cross multiply
    388,574.40x = 582,746.40 × 151,780.80
  4. Step 4: Simplify right side
    388,574.40x = 88,449,714,789.12
  5. Step 5: Solve for x
    x = 88,449,714,789.12/388,574.40
  6. Step 6: Final answer
    x = 227,626.20

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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.