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Finding the Fourth Proportional to 284,628, 392,868.56 and 187,902.48

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Solution

The fourth proportional to 284,628, 392,868.56 and 187,902.48 is: 259,359.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,628 : 392,868.56 = 187,902.48 : x
  2. Step 2: Convert to fraction form
    284,628/392,868.56 = 187,902.48/x
  3. Step 3: Cross multiply
    284,628x = 392,868.56 × 187,902.48
  4. Step 4: Simplify right side
    284,628x = 73,820,976,738.03
  5. Step 5: Solve for x
    x = 73,820,976,738.03/284,628
  6. Step 6: Final answer
    x = 259,359.50

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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.