Home / 280,594.08-420,845.76-103,057.20

Finding the Fourth Proportional to 280,594.08, 420,845.76 and 103,057.20

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Solution

The fourth proportional to 280,594.08, 420,845.76 and 103,057.20 is: 154,569.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,594.08 : 420,845.76 = 103,057.20 : x
  2. Step 2: Convert to fraction form
    280,594.08/420,845.76 = 103,057.20/x
  3. Step 3: Cross multiply
    280,594.08x = 420,845.76 × 103,057.20
  4. Step 4: Simplify right side
    280,594.08x = 43,371,185,657.47
  5. Step 5: Solve for x
    x = 43,371,185,657.47/280,594.08
  6. Step 6: Final answer
    x = 154,569.14

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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.