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Finding the Fourth Proportional to 640,192.51, 883,483.49 and 353,731.06

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Solution

The fourth proportional to 640,192.51, 883,483.49 and 353,731.06 is: 488,158.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,192.51 : 883,483.49 = 353,731.06 : x
  2. Step 2: Convert to fraction form
    640,192.51/883,483.49 = 353,731.06/x
  3. Step 3: Cross multiply
    640,192.51x = 883,483.49 × 353,731.06
  4. Step 4: Simplify right side
    640,192.51x = 312,515,551,410.20
  5. Step 5: Solve for x
    x = 312,515,551,410.20/640,192.51
  6. Step 6: Final answer
    x = 488,158.71

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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.