Home / 338,941.55-508,412.12-128,579.49

Finding the Fourth Proportional to 338,941.55, 508,412.12 and 128,579.49

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Solution

The fourth proportional to 338,941.55, 508,412.12 and 128,579.49 is: 192,869.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    338,941.55 : 508,412.12 = 128,579.49 : x
  2. Step 2: Convert to fraction form
    338,941.55/508,412.12 = 128,579.49/x
  3. Step 3: Cross multiply
    338,941.55x = 508,412.12 × 128,579.49
  4. Step 4: Simplify right side
    338,941.55x = 65,371,370,456.52
  5. Step 5: Solve for x
    x = 65,371,370,456.52/338,941.55
  6. Step 6: Final answer
    x = 192,869.16

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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.