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Finding the Fourth Proportional to 317,245.98, 476,036.10 and 139,875.42

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Solution

The fourth proportional to 317,245.98, 476,036.10 and 139,875.42 is: 209,886.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,245.98 : 476,036.10 = 139,875.42 : x
  2. Step 2: Convert to fraction form
    317,245.98/476,036.10 = 139,875.42/x
  3. Step 3: Cross multiply
    317,245.98x = 476,036.10 × 139,875.42
  4. Step 4: Simplify right side
    317,245.98x = 66,585,749,422.66
  5. Step 5: Solve for x
    x = 66,585,749,422.66/317,245.98
  6. Step 6: Final answer
    x = 209,886.82

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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.