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Finding the Fourth Proportional to 363,840.39, 501,802.70 and 305,471.79

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Solution

The fourth proportional to 363,840.39, 501,802.70 and 305,471.79 is: 421,301.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,840.39 : 501,802.70 = 305,471.79 : x
  2. Step 2: Convert to fraction form
    363,840.39/501,802.70 = 305,471.79/x
  3. Step 3: Cross multiply
    363,840.39x = 501,802.70 × 305,471.79
  4. Step 4: Simplify right side
    363,840.39x = 153,286,567,468.47
  5. Step 5: Solve for x
    x = 153,286,567,468.47/363,840.39
  6. Step 6: Final answer
    x = 421,301.68

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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.