Home / 320,372,142.72-480,559,001.76-90,342,432.96

Finding the Fourth Proportional to 320,372,142.72, 480,559,001.76 and 90,342,432.96

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Solution

The fourth proportional to 320,372,142.72, 480,559,001.76 and 90,342,432.96 is: 135,513,871.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,372,142.72 : 480,559,001.76 = 90,342,432.96 : x
  2. Step 2: Convert to fraction form
    320,372,142.72/480,559,001.76 = 90,342,432.96/x
  3. Step 3: Cross multiply
    320,372,142.72x = 480,559,001.76 × 90,342,432.96
  4. Step 4: Simplify right side
    320,372,142.72x = 43,414,869,399,827,320
  5. Step 5: Solve for x
    x = 43,414,869,399,827,320/320,372,142.72
  6. Step 6: Final answer
    x = 135,513,871.56

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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.