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Finding the Fourth Proportional to 368,290.12, 551,472.55 and 345,841.93

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Solution

The fourth proportional to 368,290.12, 551,472.55 and 345,841.93 is: 517,858.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,290.12 : 551,472.55 = 345,841.93 : x
  2. Step 2: Convert to fraction form
    368,290.12/551,472.55 = 345,841.93/x
  3. Step 3: Cross multiply
    368,290.12x = 551,472.55 × 345,841.93
  4. Step 4: Simplify right side
    368,290.12x = 190,722,331,253.10
  5. Step 5: Solve for x
    x = 190,722,331,253.10/368,290.12
  6. Step 6: Final answer
    x = 517,858.95

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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.