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Finding the Fourth Proportional to 207,217.40, 285,960.44 and 122,339.93

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Solution

The fourth proportional to 207,217.40, 285,960.44 and 122,339.93 is: 168,829.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,217.40 : 285,960.44 = 122,339.93 : x
  2. Step 2: Convert to fraction form
    207,217.40/285,960.44 = 122,339.93/x
  3. Step 3: Cross multiply
    207,217.40x = 285,960.44 × 122,339.93
  4. Step 4: Simplify right side
    207,217.40x = 34,984,379,088.42
  5. Step 5: Solve for x
    x = 34,984,379,088.42/207,217.40
  6. Step 6: Final answer
    x = 168,829.35

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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.