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Finding the Fourth Proportional to 551,954.66, 761,704.56 and 310,223.12

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Solution

The fourth proportional to 551,954.66, 761,704.56 and 310,223.12 is: 428,111.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,954.66 : 761,704.56 = 310,223.12 : x
  2. Step 2: Convert to fraction form
    551,954.66/761,704.56 = 310,223.12/x
  3. Step 3: Cross multiply
    551,954.66x = 761,704.56 × 310,223.12
  4. Step 4: Simplify right side
    551,954.66x = 236,298,361,312.90
  5. Step 5: Solve for x
    x = 236,298,361,312.90/551,954.66
  6. Step 6: Final answer
    x = 428,111.91

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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.