Home / 379,931.20-569,896.69-143,218.53

Finding the Fourth Proportional to 379,931.20, 569,896.69 and 143,218.53

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Solution

The fourth proportional to 379,931.20, 569,896.69 and 143,218.53 is: 214,827.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,931.20 : 569,896.69 = 143,218.53 : x
  2. Step 2: Convert to fraction form
    379,931.20/569,896.69 = 143,218.53/x
  3. Step 3: Cross multiply
    379,931.20x = 569,896.69 × 143,218.53
  4. Step 4: Simplify right side
    379,931.20x = 81,619,762,628.09
  5. Step 5: Solve for x
    x = 81,619,762,628.09/379,931.20
  6. Step 6: Final answer
    x = 214,827.74

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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.