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Finding the Fourth Proportional to 319,801.20, 479,701.80 and 317,468.40

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Solution

The fourth proportional to 319,801.20, 479,701.80 and 317,468.40 is: 476,202.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,801.20 : 479,701.80 = 317,468.40 : x
  2. Step 2: Convert to fraction form
    319,801.20/479,701.80 = 317,468.40/x
  3. Step 3: Cross multiply
    319,801.20x = 479,701.80 × 317,468.40
  4. Step 4: Simplify right side
    319,801.20x = 152,290,162,923.12
  5. Step 5: Solve for x
    x = 152,290,162,923.12/319,801.20
  6. Step 6: Final answer
    x = 476,202.60

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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.