Home / 284,436.80-392,520.32-157,121.28

Finding the Fourth Proportional to 284,436.80, 392,520.32 and 157,121.28

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Solution

The fourth proportional to 284,436.80, 392,520.32 and 157,121.28 is: 216,826.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    284,436.80 : 392,520.32 = 157,121.28 : x
  2. Step 2: Convert to fraction form
    284,436.80/392,520.32 = 157,121.28/x
  3. Step 3: Cross multiply
    284,436.80x = 392,520.32 × 157,121.28
  4. Step 4: Simplify right side
    284,436.80x = 61,673,295,104.41
  5. Step 5: Solve for x
    x = 61,673,295,104.41/284,436.80
  6. Step 6: Final answer
    x = 216,826.01

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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.