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Finding the Fourth Proportional to 245,905.80, 368,858.70 and 88,312.20

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Solution

The fourth proportional to 245,905.80, 368,858.70 and 88,312.20 is: 132,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,905.80 : 368,858.70 = 88,312.20 : x
  2. Step 2: Convert to fraction form
    245,905.80/368,858.70 = 88,312.20/x
  3. Step 3: Cross multiply
    245,905.80x = 368,858.70 × 88,312.20
  4. Step 4: Simplify right side
    245,905.80x = 32,574,723,286.14
  5. Step 5: Solve for x
    x = 32,574,723,286.14/245,905.80
  6. Step 6: Final answer
    x = 132,468.30

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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.