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Finding the Fourth Proportional to 245,507.20, 368,239.20 and 67,998.40

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Solution

The fourth proportional to 245,507.20, 368,239.20 and 67,998.40 is: 101,991.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,507.20 : 368,239.20 = 67,998.40 : x
  2. Step 2: Convert to fraction form
    245,507.20/368,239.20 = 67,998.40/x
  3. Step 3: Cross multiply
    245,507.20x = 368,239.20 × 67,998.40
  4. Step 4: Simplify right side
    245,507.20x = 25,039,676,417.28
  5. Step 5: Solve for x
    x = 25,039,676,417.28/245,507.20
  6. Step 6: Final answer
    x = 101,991.62

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1.5x scale

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.