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Finding the Fourth Proportional to 304,808.86, 420,841.70 and 190,261.95

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Solution

The fourth proportional to 304,808.86, 420,841.70 and 190,261.95 is: 262,689.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    304,808.86 : 420,841.70 = 190,261.95 : x
  2. Step 2: Convert to fraction form
    304,808.86/420,841.70 = 190,261.95/x
  3. Step 3: Cross multiply
    304,808.86x = 420,841.70 × 190,261.95
  4. Step 4: Simplify right side
    304,808.86x = 80,070,162,483.32
  5. Step 5: Solve for x
    x = 80,070,162,483.32/304,808.86
  6. Step 6: Final answer
    x = 262,689.75

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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.