Home / 280,006.32-420,001.92-90,466.32

Finding the Fourth Proportional to 280,006.32, 420,001.92 and 90,466.32

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Solution

The fourth proportional to 280,006.32, 420,001.92 and 90,466.32 is: 135,697.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,006.32 : 420,001.92 = 90,466.32 : x
  2. Step 2: Convert to fraction form
    280,006.32/420,001.92 = 90,466.32/x
  3. Step 3: Cross multiply
    280,006.32x = 420,001.92 × 90,466.32
  4. Step 4: Simplify right side
    280,006.32x = 37,996,028,095.33
  5. Step 5: Solve for x
    x = 37,996,028,095.33/280,006.32
  6. Step 6: Final answer
    x = 135,697.04

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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.