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Finding the Fourth Proportional to 317,443.58, 438,084.75 and 174,208.78

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Solution

The fourth proportional to 317,443.58, 438,084.75 and 174,208.78 is: 240,415.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,443.58 : 438,084.75 = 174,208.78 : x
  2. Step 2: Convert to fraction form
    317,443.58/438,084.75 = 174,208.78/x
  3. Step 3: Cross multiply
    317,443.58x = 438,084.75 × 174,208.78
  4. Step 4: Simplify right side
    317,443.58x = 76,318,209,834.11
  5. Step 5: Solve for x
    x = 76,318,209,834.11/317,443.58
  6. Step 6: Final answer
    x = 240,415.04

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1.5x scale

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.