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Finding the Fourth Proportional to 317,355.93, 437,836.25 and 208,518.89

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Solution

The fourth proportional to 317,355.93, 437,836.25 and 208,518.89 is: 287,680.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,355.93 : 437,836.25 = 208,518.89 : x
  2. Step 2: Convert to fraction form
    317,355.93/437,836.25 = 208,518.89/x
  3. Step 3: Cross multiply
    317,355.93x = 437,836.25 × 208,518.89
  4. Step 4: Simplify right side
    317,355.93x = 91,297,127,809.17
  5. Step 5: Solve for x
    x = 91,297,127,809.17/317,355.93
  6. Step 6: Final answer
    x = 287,680.55

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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.