Home / 257,263.13-386,026.45-122,479.70

Finding the Fourth Proportional to 257,263.13, 386,026.45 and 122,479.70

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Solution

The fourth proportional to 257,263.13, 386,026.45 and 122,479.70 is: 183,782.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,263.13 : 386,026.45 = 122,479.70 : x
  2. Step 2: Convert to fraction form
    257,263.13/386,026.45 = 122,479.70/x
  3. Step 3: Cross multiply
    257,263.13x = 386,026.45 × 122,479.70
  4. Step 4: Simplify right side
    257,263.13x = 47,280,401,551.73
  5. Step 5: Solve for x
    x = 47,280,401,551.73/257,263.13
  6. Step 6: Final answer
    x = 183,782.27

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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.