Home / 279,927.91-386,289.03-157,416.80

Finding the Fourth Proportional to 279,927.91, 386,289.03 and 157,416.80

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Solution

The fourth proportional to 279,927.91, 386,289.03 and 157,416.80 is: 217,228.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,927.91 : 386,289.03 = 157,416.80 : x
  2. Step 2: Convert to fraction form
    279,927.91/386,289.03 = 157,416.80/x
  3. Step 3: Cross multiply
    279,927.91x = 386,289.03 × 157,416.80
  4. Step 4: Simplify right side
    279,927.91x = 60,808,381,636.57
  5. Step 5: Solve for x
    x = 60,808,381,636.57/279,927.91
  6. Step 6: Final answer
    x = 217,228.72

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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.