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Finding the Fourth Proportional to 317,905.40, 476,858.10 and 170,449.40

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Solution

The fourth proportional to 317,905.40, 476,858.10 and 170,449.40 is: 255,674.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,905.40 : 476,858.10 = 170,449.40 : x
  2. Step 2: Convert to fraction form
    317,905.40/476,858.10 = 170,449.40/x
  3. Step 3: Cross multiply
    317,905.40x = 476,858.10 × 170,449.40
  4. Step 4: Simplify right side
    317,905.40x = 81,280,177,030.14
  5. Step 5: Solve for x
    x = 81,280,177,030.14/317,905.40
  6. Step 6: Final answer
    x = 255,674.10

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1.5x scale

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.