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Finding the Fourth Proportional to 291,012.86, 436,372.55 and 88,570.13

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Solution

The fourth proportional to 291,012.86, 436,372.55 and 88,570.13 is: 132,810.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,012.86 : 436,372.55 = 88,570.13 : x
  2. Step 2: Convert to fraction form
    291,012.86/436,372.55 = 88,570.13/x
  3. Step 3: Cross multiply
    291,012.86x = 436,372.55 × 88,570.13
  4. Step 4: Simplify right side
    291,012.86x = 38,649,570,857.22
  5. Step 5: Solve for x
    x = 38,649,570,857.22/291,012.86
  6. Step 6: Final answer
    x = 132,810.53

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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.