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Finding the Fourth Proportional to 280,065.60, 420,098.49 and 69,703.52

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Solution

The fourth proportional to 280,065.60, 420,098.49 and 69,703.52 is: 104,555.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,065.60 : 420,098.49 = 69,703.52 : x
  2. Step 2: Convert to fraction form
    280,065.60/420,098.49 = 69,703.52/x
  3. Step 3: Cross multiply
    280,065.60x = 420,098.49 × 69,703.52
  4. Step 4: Simplify right side
    280,065.60x = 29,282,341,399.19
  5. Step 5: Solve for x
    x = 29,282,341,399.19/280,065.60
  6. Step 6: Final answer
    x = 104,555.29

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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.