Home / 314,939.70-472,409.55-128,085.30

Finding the Fourth Proportional to 314,939.70, 472,409.55 and 128,085.30

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Solution

The fourth proportional to 314,939.70, 472,409.55 and 128,085.30 is: 192,127.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,939.70 : 472,409.55 = 128,085.30 : x
  2. Step 2: Convert to fraction form
    314,939.70/472,409.55 = 128,085.30/x
  3. Step 3: Cross multiply
    314,939.70x = 472,409.55 × 128,085.30
  4. Step 4: Simplify right side
    314,939.70x = 60,508,718,934.62
  5. Step 5: Solve for x
    x = 60,508,718,934.62/314,939.70
  6. Step 6: Final answer
    x = 192,127.95

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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.