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Finding the Fourth Proportional to 518,755.42, 715,937.52 and 304,075.86

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Solution

The fourth proportional to 518,755.42, 715,937.52 and 304,075.86 is: 419,656.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    518,755.42 : 715,937.52 = 304,075.86 : x
  2. Step 2: Convert to fraction form
    518,755.42/715,937.52 = 304,075.86/x
  3. Step 3: Cross multiply
    518,755.42x = 715,937.52 × 304,075.86
  4. Step 4: Simplify right side
    518,755.42x = 217,699,317,100.27
  5. Step 5: Solve for x
    x = 217,699,317,100.27/518,755.42
  6. Step 6: Final answer
    x = 419,656.95

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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.