Home / 280,001.30-420,003.47-69,639.24

Finding the Fourth Proportional to 280,001.30, 420,003.47 and 69,639.24

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Solution

The fourth proportional to 280,001.30, 420,003.47 and 69,639.24 is: 104,459.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,001.30 : 420,003.47 = 69,639.24 : x
  2. Step 2: Convert to fraction form
    280,001.30/420,003.47 = 69,639.24/x
  3. Step 3: Cross multiply
    280,001.30x = 420,003.47 × 69,639.24
  4. Step 4: Simplify right side
    280,001.30x = 29,248,722,622.26
  5. Step 5: Solve for x
    x = 29,248,722,622.26/280,001.30
  6. Step 6: Final answer
    x = 104,459.24

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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.