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Finding the Fourth Proportional to 388,785.60, 582,271.04 and 299,328.96

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Solution

The fourth proportional to 388,785.60, 582,271.04 and 299,328.96 is: 448,294.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,785.60 : 582,271.04 = 299,328.96 : x
  2. Step 2: Convert to fraction form
    388,785.60/582,271.04 = 299,328.96/x
  3. Step 3: Cross multiply
    388,785.60x = 582,271.04 × 299,328.96
  4. Step 4: Simplify right side
    388,785.60x = 174,290,584,841.32
  5. Step 5: Solve for x
    x = 174,290,584,841.32/388,785.60
  6. Step 6: Final answer
    x = 448,294.86

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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.