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Finding the Fourth Proportional to 207,021.37, 310,531.71 and 64,877.59

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Solution

The fourth proportional to 207,021.37, 310,531.71 and 64,877.59 is: 97,316.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,021.37 : 310,531.71 = 64,877.59 : x
  2. Step 2: Convert to fraction form
    207,021.37/310,531.71 = 64,877.59/x
  3. Step 3: Cross multiply
    207,021.37x = 310,531.71 × 64,877.59
  4. Step 4: Simplify right side
    207,021.37x = 20,146,548,963.38
  5. Step 5: Solve for x
    x = 20,146,548,963.38/207,021.37
  6. Step 6: Final answer
    x = 97,316.28

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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.