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Finding the Fourth Proportional to 342,666.25, 513,962.21 and 89,971.97

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Solution

The fourth proportional to 342,666.25, 513,962.21 and 89,971.97 is: 134,948.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,666.25 : 513,962.21 = 89,971.97 : x
  2. Step 2: Convert to fraction form
    342,666.25/513,962.21 = 89,971.97/x
  3. Step 3: Cross multiply
    342,666.25x = 513,962.21 × 89,971.97
  4. Step 4: Simplify right side
    342,666.25x = 46,242,190,194.37
  5. Step 5: Solve for x
    x = 46,242,190,194.37/342,666.25
  6. Step 6: Final answer
    x = 134,948.19

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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.