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Finding the Fourth Proportional to 313,475.83, 432,729.07 and 211,639.23

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Solution

The fourth proportional to 313,475.83, 432,729.07 and 211,639.23 is: 292,151.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,475.83 : 432,729.07 = 211,639.23 : x
  2. Step 2: Convert to fraction form
    313,475.83/432,729.07 = 211,639.23/x
  3. Step 3: Cross multiply
    313,475.83x = 432,729.07 × 211,639.23
  4. Step 4: Simplify right side
    313,475.83x = 91,582,446,644.32
  5. Step 5: Solve for x
    x = 91,582,446,644.32/313,475.83
  6. Step 6: Final answer
    x = 292,151.54

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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.