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Finding the Fourth Proportional to 285,460.61, 427,007.50 and 217,478.24

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Solution

The fourth proportional to 285,460.61, 427,007.50 and 217,478.24 is: 325,315.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,460.61 : 427,007.50 = 217,478.24 : x
  2. Step 2: Convert to fraction form
    285,460.61/427,007.50 = 217,478.24/x
  3. Step 3: Cross multiply
    285,460.61x = 427,007.50 × 217,478.24
  4. Step 4: Simplify right side
    285,460.61x = 92,864,839,690.30
  5. Step 5: Solve for x
    x = 92,864,839,690.30/285,460.61
  6. Step 6: Final answer
    x = 325,315.78

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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.