Home / 257,106.45-385,512.02-137,015.55

Finding the Fourth Proportional to 257,106.45, 385,512.02 and 137,015.55

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Solution

The fourth proportional to 257,106.45, 385,512.02 and 137,015.55 is: 205,444.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,106.45 : 385,512.02 = 137,015.55 : x
  2. Step 2: Convert to fraction form
    257,106.45/385,512.02 = 137,015.55/x
  3. Step 3: Cross multiply
    257,106.45x = 385,512.02 × 137,015.55
  4. Step 4: Simplify right side
    257,106.45x = 52,821,141,280.64
  5. Step 5: Solve for x
    x = 52,821,141,280.64/257,106.45
  6. Step 6: Final answer
    x = 205,444.63

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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.