Home / 387,299.16-534,462.18-215,212.68

Finding the Fourth Proportional to 387,299.16, 534,462.18 and 215,212.68

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Solution

The fourth proportional to 387,299.16, 534,462.18 and 215,212.68 is: 296,987.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,299.16 : 534,462.18 = 215,212.68 : x
  2. Step 2: Convert to fraction form
    387,299.16/534,462.18 = 215,212.68/x
  3. Step 3: Cross multiply
    387,299.16x = 534,462.18 × 215,212.68
  4. Step 4: Simplify right side
    387,299.16x = 115,023,038,116.44
  5. Step 5: Solve for x
    x = 115,023,038,116.44/387,299.16
  6. Step 6: Final answer
    x = 296,987.57

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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.