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Finding the Fourth Proportional to 257,122.80, 385,447.91 and 88,603.02

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Solution

The fourth proportional to 257,122.80, 385,447.91 and 88,603.02 is: 132,823.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,122.80 : 385,447.91 = 88,603.02 : x
  2. Step 2: Convert to fraction form
    257,122.80/385,447.91 = 88,603.02/x
  3. Step 3: Cross multiply
    257,122.80x = 385,447.91 × 88,603.02
  4. Step 4: Simplify right side
    257,122.80x = 34,151,848,435.67
  5. Step 5: Solve for x
    x = 34,151,848,435.67/257,122.80
  6. Step 6: Final answer
    x = 132,823.10

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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.