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Finding the Fourth Proportional to 561,826.07, 842,763.72 and 162,507.21

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Solution

The fourth proportional to 561,826.07, 842,763.72 and 162,507.21 is: 243,767.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,826.07 : 842,763.72 = 162,507.21 : x
  2. Step 2: Convert to fraction form
    561,826.07/842,763.72 = 162,507.21/x
  3. Step 3: Cross multiply
    561,826.07x = 842,763.72 × 162,507.21
  4. Step 4: Simplify right side
    561,826.07x = 136,955,181,644.85
  5. Step 5: Solve for x
    x = 136,955,181,644.85/561,826.07
  6. Step 6: Final answer
    x = 243,767.93

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.