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Finding the Fourth Proportional to 476,161.34, 657,121.61 and 261,309.11

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Solution

The fourth proportional to 476,161.34, 657,121.61 and 261,309.11 is: 360,616.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    476,161.34 : 657,121.61 = 261,309.11 : x
  2. Step 2: Convert to fraction form
    476,161.34/657,121.61 = 261,309.11/x
  3. Step 3: Cross multiply
    476,161.34x = 657,121.61 × 261,309.11
  4. Step 4: Simplify right side
    476,161.34x = 171,711,860,438.53
  5. Step 5: Solve for x
    x = 171,711,860,438.53/476,161.34
  6. Step 6: Final answer
    x = 360,616.98

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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.