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Finding the Fourth Proportional to 302,911.61, 454,367.39 and 81,295.61

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Solution

The fourth proportional to 302,911.61, 454,367.39 and 81,295.61 is: 121,943.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,911.61 : 454,367.39 = 81,295.61 : x
  2. Step 2: Convert to fraction form
    302,911.61/454,367.39 = 81,295.61/x
  3. Step 3: Cross multiply
    302,911.61x = 454,367.39 × 81,295.61
  4. Step 4: Simplify right side
    302,911.61x = 36,938,071,455.84
  5. Step 5: Solve for x
    x = 36,938,071,455.84/302,911.61
  6. Step 6: Final answer
    x = 121,943.40

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Similar ratio
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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.