Home / 387,586.04-534,803.94-215,499.20

Finding the Fourth Proportional to 387,586.04, 534,803.94 and 215,499.20

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Solution

The fourth proportional to 387,586.04, 534,803.94 and 215,499.20 is: 297,352.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,586.04 : 534,803.94 = 215,499.20 : x
  2. Step 2: Convert to fraction form
    387,586.04/534,803.94 = 215,499.20/x
  3. Step 3: Cross multiply
    387,586.04x = 534,803.94 × 215,499.20
  4. Step 4: Simplify right side
    387,586.04x = 115,249,821,226.85
  5. Step 5: Solve for x
    x = 115,249,821,226.85/387,586.04
  6. Step 6: Final answer
    x = 297,352.87

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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.