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Finding the Fourth Proportional to 312,507.26, 431,237.67 and 183,451.03

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Solution

The fourth proportional to 312,507.26, 431,237.67 and 183,451.03 is: 253,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,507.26 : 431,237.67 = 183,451.03 : x
  2. Step 2: Convert to fraction form
    312,507.26/431,237.67 = 183,451.03/x
  3. Step 3: Cross multiply
    312,507.26x = 431,237.67 × 183,451.03
  4. Step 4: Simplify right side
    312,507.26x = 79,110,994,002.18
  5. Step 5: Solve for x
    x = 79,110,994,002.18/312,507.26
  6. Step 6: Final answer
    x = 253,149.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.