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Finding the Fourth Proportional to 350,455.30, 525,682.89 and 84,215.81

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Solution

The fourth proportional to 350,455.30, 525,682.89 and 84,215.81 is: 126,323.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    350,455.30 : 525,682.89 = 84,215.81 : x
  2. Step 2: Convert to fraction form
    350,455.30/525,682.89 = 84,215.81/x
  3. Step 3: Cross multiply
    350,455.30x = 525,682.89 × 84,215.81
  4. Step 4: Simplify right side
    350,455.30x = 44,270,810,384.49
  5. Step 5: Solve for x
    x = 44,270,810,384.49/350,455.30
  6. Step 6: Final answer
    x = 126,323.70

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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.