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Finding the Fourth Proportional to 229,149.56, 316,226.41 and 128,547.56

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Solution

The fourth proportional to 229,149.56, 316,226.41 and 128,547.56 is: 177,395.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,149.56 : 316,226.41 = 128,547.56 : x
  2. Step 2: Convert to fraction form
    229,149.56/316,226.41 = 128,547.56/x
  3. Step 3: Cross multiply
    229,149.56x = 316,226.41 × 128,547.56
  4. Step 4: Simplify right side
    229,149.56x = 40,650,133,882.26
  5. Step 5: Solve for x
    x = 40,650,133,882.26/229,149.56
  6. Step 6: Final answer
    x = 177,395.64

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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.