Home / 399,590.03-551,445.06-238,538.55

Finding the Fourth Proportional to 399,590.03, 551,445.06 and 238,538.55

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Solution

The fourth proportional to 399,590.03, 551,445.06 and 238,538.55 is: 329,189.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,590.03 : 551,445.06 = 238,538.55 : x
  2. Step 2: Convert to fraction form
    399,590.03/551,445.06 = 238,538.55/x
  3. Step 3: Cross multiply
    399,590.03x = 551,445.06 × 238,538.55
  4. Step 4: Simplify right side
    399,590.03x = 131,540,905,017.06
  5. Step 5: Solve for x
    x = 131,540,905,017.06/399,590.03
  6. Step 6: Final answer
    x = 329,189.66

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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.