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Finding the Fourth Proportional to 379,881.13, 569,840.73 and 113,643.85

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Solution

The fourth proportional to 379,881.13, 569,840.73 and 113,643.85 is: 170,471.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    379,881.13 : 569,840.73 = 113,643.85 : x
  2. Step 2: Convert to fraction form
    379,881.13/569,840.73 = 113,643.85/x
  3. Step 3: Cross multiply
    379,881.13x = 569,840.73 × 113,643.85
  4. Step 4: Simplify right side
    379,881.13x = 64,758,894,444.01
  5. Step 5: Solve for x
    x = 64,758,894,444.01/379,881.13
  6. Step 6: Final answer
    x = 170,471.47

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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.