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Finding the Fourth Proportional to 285,336.80, 428,926.80 and 202,802.40

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Solution

The fourth proportional to 285,336.80, 428,926.80 and 202,802.40 is: 304,858.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,336.80 : 428,926.80 = 202,802.40 : x
  2. Step 2: Convert to fraction form
    285,336.80/428,926.80 = 202,802.40/x
  3. Step 3: Cross multiply
    285,336.80x = 428,926.80 × 202,802.40
  4. Step 4: Simplify right side
    285,336.80x = 86,987,384,464.32
  5. Step 5: Solve for x
    x = 86,987,384,464.32/285,336.80
  6. Step 6: Final answer
    x = 304,858.62

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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.