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Finding the Fourth Proportional to 640,090.29, 883,349.88 and 368,157.75

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Solution

The fourth proportional to 640,090.29, 883,349.88 and 368,157.75 is: 508,072.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    640,090.29 : 883,349.88 = 368,157.75 : x
  2. Step 2: Convert to fraction form
    640,090.29/883,349.88 = 368,157.75/x
  3. Step 3: Cross multiply
    640,090.29x = 883,349.88 × 368,157.75
  4. Step 4: Simplify right side
    640,090.29x = 325,212,104,283.57
  5. Step 5: Solve for x
    x = 325,212,104,283.57/640,090.29
  6. Step 6: Final answer
    x = 508,072.24

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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.