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Finding the Fourth Proportional to 250,431.67, 375,670.71 and 90,547.60

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Solution

The fourth proportional to 250,431.67, 375,670.71 and 90,547.60 is: 135,829.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,431.67 : 375,670.71 = 90,547.60 : x
  2. Step 2: Convert to fraction form
    250,431.67/375,670.71 = 90,547.60/x
  3. Step 3: Cross multiply
    250,431.67x = 375,670.71 × 90,547.60
  4. Step 4: Simplify right side
    250,431.67x = 34,016,081,180.80
  5. Step 5: Solve for x
    x = 34,016,081,180.80/250,431.67
  6. Step 6: Final answer
    x = 135,829.79

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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.