Home / 289,275.40-432,153.97-187,242.28

Finding the Fourth Proportional to 289,275.40, 432,153.97 and 187,242.28

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Solution

The fourth proportional to 289,275.40, 432,153.97 and 187,242.28 is: 279,724.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,275.40 : 432,153.97 = 187,242.28 : x
  2. Step 2: Convert to fraction form
    289,275.40/432,153.97 = 187,242.28/x
  3. Step 3: Cross multiply
    289,275.40x = 432,153.97 × 187,242.28
  4. Step 4: Simplify right side
    289,275.40x = 80,917,494,653.85
  5. Step 5: Solve for x
    x = 80,917,494,653.85/289,275.40
  6. Step 6: Final answer
    x = 279,724.77

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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.