Home / 279,582.46-421,419.06-255,621.44

Finding the Fourth Proportional to 279,582.46, 421,419.06 and 255,621.44

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Solution

The fourth proportional to 279,582.46, 421,419.06 and 255,621.44 is: 385,302.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,582.46 : 421,419.06 = 255,621.44 : x
  2. Step 2: Convert to fraction form
    279,582.46/421,419.06 = 255,621.44/x
  3. Step 3: Cross multiply
    279,582.46x = 421,419.06 × 255,621.44
  4. Step 4: Simplify right side
    279,582.46x = 107,723,748,014.19
  5. Step 5: Solve for x
    x = 107,723,748,014.19/279,582.46
  6. Step 6: Final answer
    x = 385,302.24

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.