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Finding the Fourth Proportional to 347,608.13, 479,699.21 and 188,632.13

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Solution

The fourth proportional to 347,608.13, 479,699.21 and 188,632.13 is: 260,312.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,608.13 : 479,699.21 = 188,632.13 : x
  2. Step 2: Convert to fraction form
    347,608.13/479,699.21 = 188,632.13/x
  3. Step 3: Cross multiply
    347,608.13x = 479,699.21 × 188,632.13
  4. Step 4: Simplify right side
    347,608.13x = 90,486,681,814.70
  5. Step 5: Solve for x
    x = 90,486,681,814.70/347,608.13
  6. Step 6: Final answer
    x = 260,312.33

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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.