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Finding the Fourth Proportional to 279,479.96, 385,689.27 and 152,162.54

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Solution

The fourth proportional to 279,479.96, 385,689.27 and 152,162.54 is: 209,988.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,479.96 : 385,689.27 = 152,162.54 : x
  2. Step 2: Convert to fraction form
    279,479.96/385,689.27 = 152,162.54/x
  3. Step 3: Cross multiply
    279,479.96x = 385,689.27 × 152,162.54
  4. Step 4: Simplify right side
    279,479.96x = 58,687,457,045.50
  5. Step 5: Solve for x
    x = 58,687,457,045.50/279,479.96
  6. Step 6: Final answer
    x = 209,988.07

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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.