Home / 338,948.16-508,120.20-128,733.76

Finding the Fourth Proportional to 338,948.16, 508,120.20 and 128,733.76

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Solution

The fourth proportional to 338,948.16, 508,120.20 and 128,733.76 is: 192,985.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,948.16 : 508,120.20 = 128,733.76 : x
  2. Step 2: Convert to fraction form
    338,948.16/508,120.20 = 128,733.76/x
  3. Step 3: Cross multiply
    338,948.16x = 508,120.20 × 128,733.76
  4. Step 4: Simplify right side
    338,948.16x = 65,412,223,877.95
  5. Step 5: Solve for x
    x = 65,412,223,877.95/338,948.16
  6. Step 6: Final answer
    x = 192,985.92

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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.