Home / 285,146.06-393,496.80-157,818.92

Finding the Fourth Proportional to 285,146.06, 393,496.80 and 157,818.92

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Solution

The fourth proportional to 285,146.06, 393,496.80 and 157,818.92 is: 217,787.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,146.06 : 393,496.80 = 157,818.92 : x
  2. Step 2: Convert to fraction form
    285,146.06/393,496.80 = 157,818.92/x
  3. Step 3: Cross multiply
    285,146.06x = 393,496.80 × 157,818.92
  4. Step 4: Simplify right side
    285,146.06x = 62,101,239,999.46
  5. Step 5: Solve for x
    x = 62,101,239,999.46/285,146.06
  6. Step 6: Final answer
    x = 217,787.47

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Double scale
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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.