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Finding the Fourth Proportional to 617,239.86, 851,771.43 and 345,312.51

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Solution

The fourth proportional to 617,239.86, 851,771.43 and 345,312.51 is: 476,520.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    617,239.86 : 851,771.43 = 345,312.51 : x
  2. Step 2: Convert to fraction form
    617,239.86/851,771.43 = 345,312.51/x
  3. Step 3: Cross multiply
    617,239.86x = 851,771.43 × 345,312.51
  4. Step 4: Simplify right side
    617,239.86x = 294,127,330,439.59
  5. Step 5: Solve for x
    x = 294,127,330,439.59/617,239.86
  6. Step 6: Final answer
    x = 476,520.31

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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.