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Finding the Fourth Proportional to 379,491.66, 569,153.65 and 109,561.15

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Solution

The fourth proportional to 379,491.66, 569,153.65 and 109,561.15 is: 164,317.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,491.66 : 569,153.65 = 109,561.15 : x
  2. Step 2: Convert to fraction form
    379,491.66/569,153.65 = 109,561.15/x
  3. Step 3: Cross multiply
    379,491.66x = 569,153.65 × 109,561.15
  4. Step 4: Simplify right side
    379,491.66x = 62,357,127,872.89
  5. Step 5: Solve for x
    x = 62,357,127,872.89/379,491.66
  6. Step 6: Final answer
    x = 164,317.52

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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.