Home / 387,531.44-534,792.65-215,465.29

Finding the Fourth Proportional to 387,531.44, 534,792.65 and 215,465.29

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Solution

The fourth proportional to 387,531.44, 534,792.65 and 215,465.29 is: 297,341.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,531.44 : 534,792.65 = 215,465.29 : x
  2. Step 2: Convert to fraction form
    387,531.44/534,792.65 = 215,465.29/x
  3. Step 3: Cross multiply
    387,531.44x = 534,792.65 × 215,465.29
  4. Step 4: Simplify right side
    387,531.44x = 115,229,251,007.81
  5. Step 5: Solve for x
    x = 115,229,251,007.81/387,531.44
  6. Step 6: Final answer
    x = 297,341.69

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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.