Home / 387,934.22-535,345.72-218,164.70

Finding the Fourth Proportional to 387,934.22, 535,345.72 and 218,164.70

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Solution

The fourth proportional to 387,934.22, 535,345.72 and 218,164.70 is: 301,065.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,934.22 : 535,345.72 = 218,164.70 : x
  2. Step 2: Convert to fraction form
    387,934.22/535,345.72 = 218,164.70/x
  3. Step 3: Cross multiply
    387,934.22x = 535,345.72 × 218,164.70
  4. Step 4: Simplify right side
    387,934.22x = 116,793,535,177.94
  5. Step 5: Solve for x
    x = 116,793,535,177.94/387,934.22
  6. Step 6: Final answer
    x = 301,065.31

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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.