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Finding the Fourth Proportional to 340,680.88, 511,473.48 and 291,079.72

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Solution

The fourth proportional to 340,680.88, 511,473.48 and 291,079.72 is: 437,005.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,680.88 : 511,473.48 = 291,079.72 : x
  2. Step 2: Convert to fraction form
    340,680.88/511,473.48 = 291,079.72/x
  3. Step 3: Cross multiply
    340,680.88x = 511,473.48 × 291,079.72
  4. Step 4: Simplify right side
    340,680.88x = 148,879,557,345.83
  5. Step 5: Solve for x
    x = 148,879,557,345.83/340,680.88
  6. Step 6: Final answer
    x = 437,005.91

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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.