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Finding the Fourth Proportional to 479,551.16, 661,681.78 and 275,562.66

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Solution

The fourth proportional to 479,551.16, 661,681.78 and 275,562.66 is: 380,219.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,551.16 : 661,681.78 = 275,562.66 : x
  2. Step 2: Convert to fraction form
    479,551.16/661,681.78 = 275,562.66/x
  3. Step 3: Cross multiply
    479,551.16x = 661,681.78 × 275,562.66
  4. Step 4: Simplify right side
    479,551.16x = 182,334,791,370.34
  5. Step 5: Solve for x
    x = 182,334,791,370.34/479,551.16
  6. Step 6: Final answer
    x = 380,219.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.