Home / 257,321.28-385,726.50-122,148.48

Finding the Fourth Proportional to 257,321.28, 385,726.50 and 122,148.48

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Solution

The fourth proportional to 257,321.28, 385,726.50 and 122,148.48 is: 183,101.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,321.28 : 385,726.50 = 122,148.48 : x
  2. Step 2: Convert to fraction form
    257,321.28/385,726.50 = 122,148.48/x
  3. Step 3: Cross multiply
    257,321.28x = 385,726.50 × 122,148.48
  4. Step 4: Simplify right side
    257,321.28x = 47,115,905,670.72
  5. Step 5: Solve for x
    x = 47,115,905,670.72/257,321.28
  6. Step 6: Final answer
    x = 183,101.47

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1.5x scale

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.