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Finding the Fourth Proportional to 257,608, 355,431.76 and 148,685.68

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Solution

The fourth proportional to 257,608, 355,431.76 and 148,685.68 is: 205,147.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,608 : 355,431.76 = 148,685.68 : x
  2. Step 2: Convert to fraction form
    257,608/355,431.76 = 148,685.68/x
  3. Step 3: Cross multiply
    257,608x = 355,431.76 × 148,685.68
  4. Step 4: Simplify right side
    257,608x = 52,847,612,929.20
  5. Step 5: Solve for x
    x = 52,847,612,929.20/257,608
  6. Step 6: Final answer
    x = 205,147.41

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.