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Finding the Fourth Proportional to 284,661.56, 392,853.30 and 157,334.40

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Solution

The fourth proportional to 284,661.56, 392,853.30 and 157,334.40 is: 217,132.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,661.56 : 392,853.30 = 157,334.40 : x
  2. Step 2: Convert to fraction form
    284,661.56/392,853.30 = 157,334.40/x
  3. Step 3: Cross multiply
    284,661.56x = 392,853.30 × 157,334.40
  4. Step 4: Simplify right side
    284,661.56x = 61,809,338,243.52
  5. Step 5: Solve for x
    x = 61,809,338,243.52/284,661.56
  6. Step 6: Final answer
    x = 217,132.72

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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.