Home / 224,139.04-309,313.20-128,643.28

Finding the Fourth Proportional to 224,139.04, 309,313.20 and 128,643.28

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Solution

The fourth proportional to 224,139.04, 309,313.20 and 128,643.28 is: 177,528.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    224,139.04 : 309,313.20 = 128,643.28 : x
  2. Step 2: Convert to fraction form
    224,139.04/309,313.20 = 128,643.28/x
  3. Step 3: Cross multiply
    224,139.04x = 309,313.20 × 128,643.28
  4. Step 4: Simplify right side
    224,139.04x = 39,791,064,595.30
  5. Step 5: Solve for x
    x = 39,791,064,595.30/224,139.04
  6. Step 6: Final answer
    x = 177,528.49

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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.