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Finding the Fourth Proportional to 310,692.55, 428,751.63 and 174,726.43

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Solution

The fourth proportional to 310,692.55, 428,751.63 and 174,726.43 is: 241,120.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    310,692.55 : 428,751.63 = 174,726.43 : x
  2. Step 2: Convert to fraction form
    310,692.55/428,751.63 = 174,726.43/x
  3. Step 3: Cross multiply
    310,692.55x = 428,751.63 × 174,726.43
  4. Step 4: Simplify right side
    310,692.55x = 74,914,241,666.58
  5. Step 5: Solve for x
    x = 74,914,241,666.58/310,692.55
  6. Step 6: Final answer
    x = 241,120.17

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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.