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Finding the Fourth Proportional to 384,697.70, 531,031 and 344,340.26

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Solution

The fourth proportional to 384,697.70, 531,031 and 344,340.26 is: 475,322.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    384,697.70 : 531,031 = 344,340.26 : x
  2. Step 2: Convert to fraction form
    384,697.70/531,031 = 344,340.26/x
  3. Step 3: Cross multiply
    384,697.70x = 531,031 × 344,340.26
  4. Step 4: Simplify right side
    384,697.70x = 182,855,352,608.06
  5. Step 5: Solve for x
    x = 182,855,352,608.06/384,697.70
  6. Step 6: Final answer
    x = 475,322.19

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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.