Home / 229,384.12-316,545.42-128,782.12

Finding the Fourth Proportional to 229,384.12, 316,545.42 and 128,782.12

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Solution

The fourth proportional to 229,384.12, 316,545.42 and 128,782.12 is: 177,716.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,384.12 : 316,545.42 = 128,782.12 : x
  2. Step 2: Convert to fraction form
    229,384.12/316,545.42 = 128,782.12/x
  3. Step 3: Cross multiply
    229,384.12x = 316,545.42 × 128,782.12
  4. Step 4: Simplify right side
    229,384.12x = 40,765,390,263.89
  5. Step 5: Solve for x
    x = 40,765,390,263.89/229,384.12
  6. Step 6: Final answer
    x = 177,716.71

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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.