Home / 287,227.50-430,840.98-129,271.38

Finding the Fourth Proportional to 287,227.50, 430,840.98 and 129,271.38

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Solution

The fourth proportional to 287,227.50, 430,840.98 and 129,271.38 is: 193,906.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,227.50 : 430,840.98 = 129,271.38 : x
  2. Step 2: Convert to fraction form
    287,227.50/430,840.98 = 129,271.38/x
  3. Step 3: Cross multiply
    287,227.50x = 430,840.98 × 129,271.38
  4. Step 4: Simplify right side
    287,227.50x = 55,695,408,045.15
  5. Step 5: Solve for x
    x = 55,695,408,045.15/287,227.50
  6. Step 6: Final answer
    x = 193,906.95

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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.