Home / 387,066.36-580,304.08-218,776.72

Finding the Fourth Proportional to 387,066.36, 580,304.08 and 218,776.72

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Solution

The fourth proportional to 387,066.36, 580,304.08 and 218,776.72 is: 327,998.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,066.36 : 580,304.08 = 218,776.72 : x
  2. Step 2: Convert to fraction form
    387,066.36/580,304.08 = 218,776.72/x
  3. Step 3: Cross multiply
    387,066.36x = 580,304.08 × 218,776.72
  4. Step 4: Simplify right side
    387,066.36x = 126,957,023,225.02
  5. Step 5: Solve for x
    x = 126,957,023,225.02/387,066.36
  6. Step 6: Final answer
    x = 327,998.08

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1.5x scale

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.