Home / 387,563.23-534,881.55-215,498.35

Finding the Fourth Proportional to 387,563.23, 534,881.55 and 215,498.35

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Solution

The fourth proportional to 387,563.23, 534,881.55 and 215,498.35 is: 297,412.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,563.23 : 534,881.55 = 215,498.35 : x
  2. Step 2: Convert to fraction form
    387,563.23/534,881.55 = 215,498.35/x
  3. Step 3: Cross multiply
    387,563.23x = 534,881.55 × 215,498.35
  4. Step 4: Simplify right side
    387,563.23x = 115,266,091,470.44
  5. Step 5: Solve for x
    x = 115,266,091,470.44/387,563.23
  6. Step 6: Final answer
    x = 297,412.35

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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.