Home / 280,621.96-387,258.65-159,763.24

Finding the Fourth Proportional to 280,621.96, 387,258.65 and 159,763.24

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Solution

The fourth proportional to 280,621.96, 387,258.65 and 159,763.24 is: 220,473.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,621.96 : 387,258.65 = 159,763.24 : x
  2. Step 2: Convert to fraction form
    280,621.96/387,258.65 = 159,763.24/x
  3. Step 3: Cross multiply
    280,621.96x = 387,258.65 × 159,763.24
  4. Step 4: Simplify right side
    280,621.96x = 61,869,698,369.65
  5. Step 5: Solve for x
    x = 61,869,698,369.65/280,621.96
  6. Step 6: Final answer
    x = 220,473.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.