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Finding the Fourth Proportional to 285,679.61, 393,340.15 and 242,568.37

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Solution

The fourth proportional to 285,679.61, 393,340.15 and 242,568.37 is: 333,982.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,679.61 : 393,340.15 = 242,568.37 : x
  2. Step 2: Convert to fraction form
    285,679.61/393,340.15 = 242,568.37/x
  3. Step 3: Cross multiply
    285,679.61x = 393,340.15 × 242,568.37
  4. Step 4: Simplify right side
    285,679.61x = 95,411,879,835.94
  5. Step 5: Solve for x
    x = 95,411,879,835.94/285,679.61
  6. Step 6: Final answer
    x = 333,982.11

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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.