Home / 257,815.60-386,723.40-254,316.40

Finding the Fourth Proportional to 257,815.60, 386,723.40 and 254,316.40

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Solution

The fourth proportional to 257,815.60, 386,723.40 and 254,316.40 is: 381,474.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,815.60 : 386,723.40 = 254,316.40 : x
  2. Step 2: Convert to fraction form
    257,815.60/386,723.40 = 254,316.40/x
  3. Step 3: Cross multiply
    257,815.60x = 386,723.40 × 254,316.40
  4. Step 4: Simplify right side
    257,815.60x = 98,350,102,883.76
  5. Step 5: Solve for x
    x = 98,350,102,883.76/257,815.60
  6. Step 6: Final answer
    x = 381,474.60

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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.