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Finding the Fourth Proportional to 251,673, 377,567.90 and 85,461.16

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Solution

The fourth proportional to 251,673, 377,567.90 and 85,461.16 is: 128,211.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,673 : 377,567.90 = 85,461.16 : x
  2. Step 2: Convert to fraction form
    251,673/377,567.90 = 85,461.16/x
  3. Step 3: Cross multiply
    251,673x = 377,567.90 × 85,461.16
  4. Step 4: Simplify right side
    251,673x = 32,267,390,712.76
  5. Step 5: Solve for x
    x = 32,267,390,712.76/251,673
  6. Step 6: Final answer
    x = 128,211.57

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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.