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Finding the Fourth Proportional to 311,756.40, 430,120.68 and 175,773.36

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Solution

The fourth proportional to 311,756.40, 430,120.68 and 175,773.36 is: 242,509.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,756.40 : 430,120.68 = 175,773.36 : x
  2. Step 2: Convert to fraction form
    311,756.40/430,120.68 = 175,773.36/x
  3. Step 3: Cross multiply
    311,756.40x = 430,120.68 × 175,773.36
  4. Step 4: Simplify right side
    311,756.40x = 75,603,757,129.08
  5. Step 5: Solve for x
    x = 75,603,757,129.08/311,756.40
  6. Step 6: Final answer
    x = 242,509.08

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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.