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Finding the Fourth Proportional to 482,854.11, 666,421.14 and 278,868.37

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Solution

The fourth proportional to 482,854.11, 666,421.14 and 278,868.37 is: 384,885.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    482,854.11 : 666,421.14 = 278,868.37 : x
  2. Step 2: Convert to fraction form
    482,854.11/666,421.14 = 278,868.37/x
  3. Step 3: Cross multiply
    482,854.11x = 666,421.14 × 278,868.37
  4. Step 4: Simplify right side
    482,854.11x = 185,843,777,045.34
  5. Step 5: Solve for x
    x = 185,843,777,045.34/482,854.11
  6. Step 6: Final answer
    x = 384,885.98

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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.