Home / 402,623.38-555,630.89-218,874.31

Finding the Fourth Proportional to 402,623.38, 555,630.89 and 218,874.31

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Solution

The fourth proportional to 402,623.38, 555,630.89 and 218,874.31 is: 302,052.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,623.38 : 555,630.89 = 218,874.31 : x
  2. Step 2: Convert to fraction form
    402,623.38/555,630.89 = 218,874.31/x
  3. Step 3: Cross multiply
    402,623.38x = 555,630.89 × 218,874.31
  4. Step 4: Simplify right side
    402,623.38x = 121,613,326,821.54
  5. Step 5: Solve for x
    x = 121,613,326,821.54/402,623.38
  6. Step 6: Final answer
    x = 302,052.32

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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.