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Finding the Fourth Proportional to 438,692.32, 605,446.14 and 266,619.16

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Solution

The fourth proportional to 438,692.32, 605,446.14 and 266,619.16 is: 367,965.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,692.32 : 605,446.14 = 266,619.16 : x
  2. Step 2: Convert to fraction form
    438,692.32/605,446.14 = 266,619.16/x
  3. Step 3: Cross multiply
    438,692.32x = 605,446.14 × 266,619.16
  4. Step 4: Simplify right side
    438,692.32x = 161,423,541,272.04
  5. Step 5: Solve for x
    x = 161,423,541,272.04/438,692.32
  6. Step 6: Final answer
    x = 367,965.28

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1.5x scale

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.