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Finding the Fourth Proportional to 421,590.04, 632,634.22 and 155,537.44

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Solution

The fourth proportional to 421,590.04, 632,634.22 and 155,537.44 is: 233,398.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,590.04 : 632,634.22 = 155,537.44 : x
  2. Step 2: Convert to fraction form
    421,590.04/632,634.22 = 155,537.44/x
  3. Step 3: Cross multiply
    421,590.04x = 632,634.22 × 155,537.44
  4. Step 4: Simplify right side
    421,590.04x = 98,398,307,035.20
  5. Step 5: Solve for x
    x = 98,398,307,035.20/421,590.04
  6. Step 6: Final answer
    x = 233,398.08

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.