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Finding the Fourth Proportional to 286,040.64, 429,057.63 and 69,901.17

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Solution

The fourth proportional to 286,040.64, 429,057.63 and 69,901.17 is: 104,850.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    286,040.64 : 429,057.63 = 69,901.17 : x
  2. Step 2: Convert to fraction form
    286,040.64/429,057.63 = 69,901.17/x
  3. Step 3: Cross multiply
    286,040.64x = 429,057.63 × 69,901.17
  4. Step 4: Simplify right side
    286,040.64x = 29,991,630,334.43
  5. Step 5: Solve for x
    x = 29,991,630,334.43/286,040.64
  6. Step 6: Final answer
    x = 104,850.94

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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.