Home / 280,601.28-420,889.23-103,095.32

Finding the Fourth Proportional to 280,601.28, 420,889.23 and 103,095.32

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Solution

The fourth proportional to 280,601.28, 420,889.23 and 103,095.32 is: 154,638.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,601.28 : 420,889.23 = 103,095.32 : x
  2. Step 2: Convert to fraction form
    280,601.28/420,889.23 = 103,095.32/x
  3. Step 3: Cross multiply
    280,601.28x = 420,889.23 × 103,095.32
  4. Step 4: Simplify right side
    280,601.28x = 43,391,707,746.96
  5. Step 5: Solve for x
    x = 43,391,707,746.96/280,601.28
  6. Step 6: Final answer
    x = 154,638.31

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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.