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Finding the Fourth Proportional to 438,119.80, 657,179.70 and 188,801.80

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Solution

The fourth proportional to 438,119.80, 657,179.70 and 188,801.80 is: 283,202.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,119.80 : 657,179.70 = 188,801.80 : x
  2. Step 2: Convert to fraction form
    438,119.80/657,179.70 = 188,801.80/x
  3. Step 3: Cross multiply
    438,119.80x = 657,179.70 × 188,801.80
  4. Step 4: Simplify right side
    438,119.80x = 124,076,710,283.46
  5. Step 5: Solve for x
    x = 124,076,710,283.46/438,119.80
  6. Step 6: Final answer
    x = 283,202.70

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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.