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Finding the Fourth Proportional to 286,660.62, 429,989.58 and 73,428.12

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Solution

The fourth proportional to 286,660.62, 429,989.58 and 73,428.12 is: 110,141.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,660.62 : 429,989.58 = 73,428.12 : x
  2. Step 2: Convert to fraction form
    286,660.62/429,989.58 = 73,428.12/x
  3. Step 3: Cross multiply
    286,660.62x = 429,989.58 × 73,428.12
  4. Step 4: Simplify right side
    286,660.62x = 31,573,326,478.99
  5. Step 5: Solve for x
    x = 31,573,326,478.99/286,660.62
  6. Step 6: Final answer
    x = 110,141.83

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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.