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Finding the Fourth Proportional to 521,692.68, 719,962.65 and 292,236.15

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Solution

The fourth proportional to 521,692.68, 719,962.65 and 292,236.15 is: 403,300.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,692.68 : 719,962.65 = 292,236.15 : x
  2. Step 2: Convert to fraction form
    521,692.68/719,962.65 = 292,236.15/x
  3. Step 3: Cross multiply
    521,692.68x = 719,962.65 × 292,236.15
  4. Step 4: Simplify right side
    521,692.68x = 210,399,112,979.80
  5. Step 5: Solve for x
    x = 210,399,112,979.80/521,692.68
  6. Step 6: Final answer
    x = 403,300.87

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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.