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Finding the Fourth Proportional to 286,265.72, 429,398.58 and 75,920.06

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Solution

The fourth proportional to 286,265.72, 429,398.58 and 75,920.06 is: 113,880.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,265.72 : 429,398.58 = 75,920.06 : x
  2. Step 2: Convert to fraction form
    286,265.72/429,398.58 = 75,920.06/x
  3. Step 3: Cross multiply
    286,265.72x = 429,398.58 × 75,920.06
  4. Step 4: Simplify right side
    286,265.72x = 32,599,965,957.51
  5. Step 5: Solve for x
    x = 32,599,965,957.51/286,265.72
  6. Step 6: Final answer
    x = 113,880.09

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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.