Home / 321,547.05-443,705.85-178,306.65

Finding the Fourth Proportional to 321,547.05, 443,705.85 and 178,306.65

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Solution

The fourth proportional to 321,547.05, 443,705.85 and 178,306.65 is: 246,047.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,547.05 : 443,705.85 = 178,306.65 : x
  2. Step 2: Convert to fraction form
    321,547.05/443,705.85 = 178,306.65/x
  3. Step 3: Cross multiply
    321,547.05x = 443,705.85 × 178,306.65
  4. Step 4: Simplify right side
    321,547.05x = 79,115,703,698.90
  5. Step 5: Solve for x
    x = 79,115,703,698.90/321,547.05
  6. Step 6: Final answer
    x = 246,047.05

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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.