Home / 280,149.16-420,301.50-155,577.64

Finding the Fourth Proportional to 280,149.16, 420,301.50 and 155,577.64

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Solution

The fourth proportional to 280,149.16, 420,301.50 and 155,577.64 is: 233,409.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,149.16 : 420,301.50 = 155,577.64 : x
  2. Step 2: Convert to fraction form
    280,149.16/420,301.50 = 155,577.64/x
  3. Step 3: Cross multiply
    280,149.16x = 420,301.50 × 155,577.64
  4. Step 4: Simplify right side
    280,149.16x = 65,389,515,458.46
  5. Step 5: Solve for x
    x = 65,389,515,458.46/280,149.16
  6. Step 6: Final answer
    x = 233,409.64

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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.