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Finding the Fourth Proportional to 640,224.72, 959,570.01 and 298,207.08

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Solution

The fourth proportional to 640,224.72, 959,570.01 and 298,207.08 is: 446,953.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,224.72 : 959,570.01 = 298,207.08 : x
  2. Step 2: Convert to fraction form
    640,224.72/959,570.01 = 298,207.08/x
  3. Step 3: Cross multiply
    640,224.72x = 959,570.01 × 298,207.08
  4. Step 4: Simplify right side
    640,224.72x = 286,150,570,737.67
  5. Step 5: Solve for x
    x = 286,150,570,737.67/640,224.72
  6. Step 6: Final answer
    x = 446,953.33

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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.