Home / 205,376.18-307,363.34-172,133.78

Finding the Fourth Proportional to 205,376.18, 307,363.34 and 172,133.78

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Solution

The fourth proportional to 205,376.18, 307,363.34 and 172,133.78 is: 257,613.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,376.18 : 307,363.34 = 172,133.78 : x
  2. Step 2: Convert to fraction form
    205,376.18/307,363.34 = 172,133.78/x
  3. Step 3: Cross multiply
    205,376.18x = 307,363.34 × 172,133.78
  4. Step 4: Simplify right side
    205,376.18x = 52,907,613,547.63
  5. Step 5: Solve for x
    x = 52,907,613,547.63/205,376.18
  6. Step 6: Final answer
    x = 257,613.19

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.