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Finding the Fourth Proportional to 561,779.41, 842,543.56 and 162,331.15

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Solution

The fourth proportional to 561,779.41, 842,543.56 and 162,331.15 is: 243,460.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,779.41 : 842,543.56 = 162,331.15 : x
  2. Step 2: Convert to fraction form
    561,779.41/842,543.56 = 162,331.15/x
  3. Step 3: Cross multiply
    561,779.41x = 842,543.56 × 162,331.15
  4. Step 4: Simplify right side
    561,779.41x = 136,771,065,019.89
  5. Step 5: Solve for x
    x = 136,771,065,019.89/561,779.41
  6. Step 6: Final answer
    x = 243,460.44

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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.