Home / 289,275.89-432,154.62-187,242.71

Finding the Fourth Proportional to 289,275.89, 432,154.62 and 187,242.71

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Solution

The fourth proportional to 289,275.89, 432,154.62 and 187,242.71 is: 279,725.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,275.89 : 432,154.62 = 187,242.71 : x
  2. Step 2: Convert to fraction form
    289,275.89/432,154.62 = 187,242.71/x
  3. Step 3: Cross multiply
    289,275.89x = 432,154.62 × 187,242.71
  4. Step 4: Simplify right side
    289,275.89x = 80,917,800,027.05
  5. Step 5: Solve for x
    x = 80,917,800,027.05/289,275.89
  6. Step 6: Final answer
    x = 279,725.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.