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Finding the Fourth Proportional to 374,369.82, 516,736.18 and 221,461.20

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Solution

The fourth proportional to 374,369.82, 516,736.18 and 221,461.20 is: 305,679.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    374,369.82 : 516,736.18 = 221,461.20 : x
  2. Step 2: Convert to fraction form
    374,369.82/516,736.18 = 221,461.20/x
  3. Step 3: Cross multiply
    374,369.82x = 516,736.18 × 221,461.20
  4. Step 4: Simplify right side
    374,369.82x = 114,437,013,952.58
  5. Step 5: Solve for x
    x = 114,437,013,952.58/374,369.82
  6. Step 6: Final answer
    x = 305,679.05

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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.