Home / 285,640.30-428,497.71-105,701.23

Finding the Fourth Proportional to 285,640.30, 428,497.71 and 105,701.23

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Solution

The fourth proportional to 285,640.30, 428,497.71 and 105,701.23 is: 158,565.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,640.30 : 428,497.71 = 105,701.23 : x
  2. Step 2: Convert to fraction form
    285,640.30/428,497.71 = 105,701.23/x
  3. Step 3: Cross multiply
    285,640.30x = 428,497.71 × 105,701.23
  4. Step 4: Simplify right side
    285,640.30x = 45,292,734,999.18
  5. Step 5: Solve for x
    x = 45,292,734,999.18/285,640.30
  6. Step 6: Final answer
    x = 158,565.63

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.