Home / 285,659.16-428,517.14-105,792.72

Finding the Fourth Proportional to 285,659.16, 428,517.14 and 105,792.72

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Solution

The fourth proportional to 285,659.16, 428,517.14 and 105,792.72 is: 158,699.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,659.16 : 428,517.14 = 105,792.72 : x
  2. Step 2: Convert to fraction form
    285,659.16/428,517.14 = 105,792.72/x
  3. Step 3: Cross multiply
    285,659.16x = 428,517.14 × 105,792.72
  4. Step 4: Simplify right side
    285,659.16x = 45,333,993,807.22
  5. Step 5: Solve for x
    x = 45,333,993,807.22/285,659.16
  6. Step 6: Final answer
    x = 158,699.60

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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.