Home / 338,827.20-508,442.40-128,486.40

Finding the Fourth Proportional to 338,827.20, 508,442.40 and 128,486.40

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Solution

The fourth proportional to 338,827.20, 508,442.40 and 128,486.40 is: 192,806.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,827.20 : 508,442.40 = 128,486.40 : x
  2. Step 2: Convert to fraction form
    338,827.20/508,442.40 = 128,486.40/x
  3. Step 3: Cross multiply
    338,827.20x = 508,442.40 × 128,486.40
  4. Step 4: Simplify right side
    338,827.20x = 65,327,933,583.36
  5. Step 5: Solve for x
    x = 65,327,933,583.36/338,827.20
  6. Step 6: Final answer
    x = 192,806.05

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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.