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Finding the Fourth Proportional to 412,686.90, 569,626.02 and 243,019.44

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Solution

The fourth proportional to 412,686.90, 569,626.02 and 243,019.44 is: 335,436.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,686.90 : 569,626.02 = 243,019.44 : x
  2. Step 2: Convert to fraction form
    412,686.90/569,626.02 = 243,019.44/x
  3. Step 3: Cross multiply
    412,686.90x = 569,626.02 × 243,019.44
  4. Step 4: Simplify right side
    412,686.90x = 138,430,196,389.83
  5. Step 5: Solve for x
    x = 138,430,196,389.83/412,686.90
  6. Step 6: Final answer
    x = 335,436.37

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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.