Home / 387,935.22-535,347.10-218,165.70

Finding the Fourth Proportional to 387,935.22, 535,347.10 and 218,165.70

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Solution

The fourth proportional to 387,935.22, 535,347.10 and 218,165.70 is: 301,066.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,935.22 : 535,347.10 = 218,165.70 : x
  2. Step 2: Convert to fraction form
    387,935.22/535,347.10 = 218,165.70/x
  3. Step 3: Cross multiply
    387,935.22x = 535,347.10 × 218,165.70
  4. Step 4: Simplify right side
    387,935.22x = 116,794,374,814.47
  5. Step 5: Solve for x
    x = 116,794,374,814.47/387,935.22
  6. Step 6: Final answer
    x = 301,066.70

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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.