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Finding the Fourth Proportional to 402,624, 555,631.75 and 218,874.93

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Solution

The fourth proportional to 402,624, 555,631.75 and 218,874.93 is: 302,053.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,624 : 555,631.75 = 218,874.93 : x
  2. Step 2: Convert to fraction form
    402,624/555,631.75 = 218,874.93/x
  3. Step 3: Cross multiply
    402,624x = 555,631.75 × 218,874.93
  4. Step 4: Simplify right side
    402,624x = 121,613,858,577.00
  5. Step 5: Solve for x
    x = 121,613,858,577.00/402,624
  6. Step 6: Final answer
    x = 302,053.18

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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.