Home / 224,425.32-309,718.79-128,938.20

Finding the Fourth Proportional to 224,425.32, 309,718.79 and 128,938.20

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Solution

The fourth proportional to 224,425.32, 309,718.79 and 128,938.20 is: 177,941.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,425.32 : 309,718.79 = 128,938.20 : x
  2. Step 2: Convert to fraction form
    224,425.32/309,718.79 = 128,938.20/x
  3. Step 3: Cross multiply
    224,425.32x = 309,718.79 × 128,938.20
  4. Step 4: Simplify right side
    224,425.32x = 39,934,583,288.78
  5. Step 5: Solve for x
    x = 39,934,583,288.78/224,425.32
  6. Step 6: Final answer
    x = 177,941.52

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.