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Finding the Fourth Proportional to 479,643.51, 661,910.16 and 264,785.34

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Solution

The fourth proportional to 479,643.51, 661,910.16 and 264,785.34 is: 365,404.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,643.51 : 661,910.16 = 264,785.34 : x
  2. Step 2: Convert to fraction form
    479,643.51/661,910.16 = 264,785.34/x
  3. Step 3: Cross multiply
    479,643.51x = 661,910.16 × 264,785.34
  4. Step 4: Simplify right side
    479,643.51x = 175,264,105,027.50
  5. Step 5: Solve for x
    x = 175,264,105,027.50/479,643.51
  6. Step 6: Final answer
    x = 365,404.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.