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Finding the Fourth Proportional to 311,577.20, 429,472.83 and 243,475.84

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Solution

The fourth proportional to 311,577.20, 429,472.83 and 243,475.84 is: 335,603.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,577.20 : 429,472.83 = 243,475.84 : x
  2. Step 2: Convert to fraction form
    311,577.20/429,472.83 = 243,475.84/x
  3. Step 3: Cross multiply
    311,577.20x = 429,472.83 × 243,475.84
  4. Step 4: Simplify right side
    311,577.20x = 104,566,258,041.43
  5. Step 5: Solve for x
    x = 104,566,258,041.43/311,577.20
  6. Step 6: Final answer
    x = 335,603.05

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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.