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Finding the Fourth Proportional to 532,785.21, 735,258 and 318,049.89

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Solution

The fourth proportional to 532,785.21, 735,258 and 318,049.89 is: 438,917.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,785.21 : 735,258 = 318,049.89 : x
  2. Step 2: Convert to fraction form
    532,785.21/735,258 = 318,049.89/x
  3. Step 3: Cross multiply
    532,785.21x = 735,258 × 318,049.89
  4. Step 4: Simplify right side
    532,785.21x = 233,848,726,021.62
  5. Step 5: Solve for x
    x = 233,848,726,021.62/532,785.21
  6. Step 6: Final answer
    x = 438,917.45

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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.