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Finding the Fourth Proportional to 245,410.20, 368,331.30 and 145,445.40

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Solution

The fourth proportional to 245,410.20, 368,331.30 and 145,445.40 is: 218,296.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,410.20 : 368,331.30 = 145,445.40 : x
  2. Step 2: Convert to fraction form
    245,410.20/368,331.30 = 145,445.40/x
  3. Step 3: Cross multiply
    245,410.20x = 368,331.30 × 145,445.40
  4. Step 4: Simplify right side
    245,410.20x = 53,572,093,261.02
  5. Step 5: Solve for x
    x = 53,572,093,261.02/245,410.20
  6. Step 6: Final answer
    x = 218,296.12

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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.