Home / 280,140.32-420,209.57-167,854.28

Finding the Fourth Proportional to 280,140.32, 420,209.57 and 167,854.28

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Solution

The fourth proportional to 280,140.32, 420,209.57 and 167,854.28 is: 251,780.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,140.32 : 420,209.57 = 167,854.28 : x
  2. Step 2: Convert to fraction form
    280,140.32/420,209.57 = 167,854.28/x
  3. Step 3: Cross multiply
    280,140.32x = 420,209.57 × 167,854.28
  4. Step 4: Simplify right side
    280,140.32x = 70,533,973,140.05
  5. Step 5: Solve for x
    x = 70,533,973,140.05/280,140.32
  6. Step 6: Final answer
    x = 251,780.87

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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.