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Finding the Fourth Proportional to 431,478.20, 595,442.70 and 240,503.72

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Solution

The fourth proportional to 431,478.20, 595,442.70 and 240,503.72 is: 331,896.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    431,478.20 : 595,442.70 = 240,503.72 : x
  2. Step 2: Convert to fraction form
    431,478.20/595,442.70 = 240,503.72/x
  3. Step 3: Cross multiply
    431,478.20x = 595,442.70 × 240,503.72
  4. Step 4: Simplify right side
    431,478.20x = 143,206,184,396.84
  5. Step 5: Solve for x
    x = 143,206,184,396.84/431,478.20
  6. Step 6: Final answer
    x = 331,896.69

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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.