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Finding the Fourth Proportional to 561,837.47, 842,780.80 and 162,518.60

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Solution

The fourth proportional to 561,837.47, 842,780.80 and 162,518.60 is: 243,785.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,837.47 : 842,780.80 = 162,518.60 : x
  2. Step 2: Convert to fraction form
    561,837.47/842,780.80 = 162,518.60/x
  3. Step 3: Cross multiply
    561,837.47x = 842,780.80 × 162,518.60
  4. Step 4: Simplify right side
    561,837.47x = 136,967,558,032.98
  5. Step 5: Solve for x
    x = 136,967,558,032.98/561,837.47
  6. Step 6: Final answer
    x = 243,785.02

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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.