Home / 387,913.62-535,317.27-218,144.10

Finding the Fourth Proportional to 387,913.62, 535,317.27 and 218,144.10

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Solution

The fourth proportional to 387,913.62, 535,317.27 and 218,144.10 is: 301,036.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,913.62 : 535,317.27 = 218,144.10 : x
  2. Step 2: Convert to fraction form
    387,913.62/535,317.27 = 218,144.10/x
  3. Step 3: Cross multiply
    387,913.62x = 535,317.27 × 218,144.10
  4. Step 4: Simplify right side
    387,913.62x = 116,776,304,078.61
  5. Step 5: Solve for x
    x = 116,776,304,078.61/387,913.62
  6. Step 6: Final answer
    x = 301,036.88

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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.