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Finding the Fourth Proportional to 551,017.12, 760,377.36 and 309,269.92

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Solution

The fourth proportional to 551,017.12, 760,377.36 and 309,269.92 is: 426,777.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    551,017.12 : 760,377.36 = 309,269.92 : x
  2. Step 2: Convert to fraction form
    551,017.12/760,377.36 = 309,269.92/x
  3. Step 3: Cross multiply
    551,017.12x = 760,377.36 × 309,269.92
  4. Step 4: Simplify right side
    551,017.12x = 235,161,845,297.01
  5. Step 5: Solve for x
    x = 235,161,845,297.01/551,017.12
  6. Step 6: Final answer
    x = 426,777.75

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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.