Home / 284,738.50-392,905.02-157,396.78

Finding the Fourth Proportional to 284,738.50, 392,905.02 and 157,396.78

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Solution

The fourth proportional to 284,738.50, 392,905.02 and 157,396.78 is: 217,188.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,738.50 : 392,905.02 = 157,396.78 : x
  2. Step 2: Convert to fraction form
    284,738.50/392,905.02 = 157,396.78/x
  3. Step 3: Cross multiply
    284,738.50x = 392,905.02 × 157,396.78
  4. Step 4: Simplify right side
    284,738.50x = 61,841,984,993.84
  5. Step 5: Solve for x
    x = 61,841,984,993.84/284,738.50
  6. Step 6: Final answer
    x = 217,188.70

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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.