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Finding the Fourth Proportional to 248,813.60, 373,220.40 and 71,310.20

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Solution

The fourth proportional to 248,813.60, 373,220.40 and 71,310.20 is: 106,965.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,813.60 : 373,220.40 = 71,310.20 : x
  2. Step 2: Convert to fraction form
    248,813.60/373,220.40 = 71,310.20/x
  3. Step 3: Cross multiply
    248,813.60x = 373,220.40 × 71,310.20
  4. Step 4: Simplify right side
    248,813.60x = 26,614,421,368.08
  5. Step 5: Solve for x
    x = 26,614,421,368.08/248,813.60
  6. Step 6: Final answer
    x = 106,965.30

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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.