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Finding the Fourth Proportional to 274,274.66, 378,534.04 and 153,422.66

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Solution

The fourth proportional to 274,274.66, 378,534.04 and 153,422.66 is: 211,742.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,274.66 : 378,534.04 = 153,422.66 : x
  2. Step 2: Convert to fraction form
    274,274.66/378,534.04 = 153,422.66/x
  3. Step 3: Cross multiply
    274,274.66x = 378,534.04 × 153,422.66
  4. Step 4: Simplify right side
    274,274.66x = 58,075,697,041.12
  5. Step 5: Solve for x
    x = 58,075,697,041.12/274,274.66
  6. Step 6: Final answer
    x = 211,742.85

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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.