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Finding the Fourth Proportional to 342,473.13, 472,279.41 and 308,832.89

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Solution

The fourth proportional to 342,473.13, 472,279.41 and 308,832.89 is: 425,888.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,473.13 : 472,279.41 = 308,832.89 : x
  2. Step 2: Convert to fraction form
    342,473.13/472,279.41 = 308,832.89/x
  3. Step 3: Cross multiply
    342,473.13x = 472,279.41 × 308,832.89
  4. Step 4: Simplify right side
    342,473.13x = 145,855,412,716.40
  5. Step 5: Solve for x
    x = 145,855,412,716.40/342,473.13
  6. Step 6: Final answer
    x = 425,888.63

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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.