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Finding the Fourth Proportional to 220,875.61, 331,345.08 and 71,066.11

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Solution

The fourth proportional to 220,875.61, 331,345.08 and 71,066.11 is: 106,609.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,875.61 : 331,345.08 = 71,066.11 : x
  2. Step 2: Convert to fraction form
    220,875.61/331,345.08 = 71,066.11/x
  3. Step 3: Cross multiply
    220,875.61x = 331,345.08 × 71,066.11
  4. Step 4: Simplify right side
    220,875.61x = 23,547,405,696.15
  5. Step 5: Solve for x
    x = 23,547,405,696.15/220,875.61
  6. Step 6: Final answer
    x = 106,609.35

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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.