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Finding the Fourth Proportional to 343,530.90, 515,054.89 and 151,314.10

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Solution

The fourth proportional to 343,530.90, 515,054.89 and 151,314.10 is: 226,864.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,530.90 : 515,054.89 = 151,314.10 : x
  2. Step 2: Convert to fraction form
    343,530.90/515,054.89 = 151,314.10/x
  3. Step 3: Cross multiply
    343,530.90x = 515,054.89 × 151,314.10
  4. Step 4: Simplify right side
    343,530.90x = 77,935,067,130.95
  5. Step 5: Solve for x
    x = 77,935,067,130.95/343,530.90
  6. Step 6: Final answer
    x = 226,864.80

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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.