Home / 219,345.12-328,968.42-100,902.60

Finding the Fourth Proportional to 219,345.12, 328,968.42 and 100,902.60

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Solution

The fourth proportional to 219,345.12, 328,968.42 and 100,902.60 is: 151,331.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,345.12 : 328,968.42 = 100,902.60 : x
  2. Step 2: Convert to fraction form
    219,345.12/328,968.42 = 100,902.60/x
  3. Step 3: Cross multiply
    219,345.12x = 328,968.42 × 100,902.60
  4. Step 4: Simplify right side
    219,345.12x = 33,193,768,895.89
  5. Step 5: Solve for x
    x = 33,193,768,895.89/219,345.12
  6. Step 6: Final answer
    x = 151,331.24

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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.