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Finding the Fourth Proportional to 285,069.54, 393,404.13 and 157,756.98

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Solution

The fourth proportional to 285,069.54, 393,404.13 and 157,756.98 is: 217,709.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,069.54 : 393,404.13 = 157,756.98 : x
  2. Step 2: Convert to fraction form
    285,069.54/393,404.13 = 157,756.98/x
  3. Step 3: Cross multiply
    285,069.54x = 393,404.13 × 157,756.98
  4. Step 4: Simplify right side
    285,069.54x = 62,062,247,468.33
  5. Step 5: Solve for x
    x = 62,062,247,468.33/285,069.54
  6. Step 6: Final answer
    x = 217,709.15

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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.