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Finding the Fourth Proportional to 387,368.53, 534,632.12 and 322,735.39

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Solution

The fourth proportional to 387,368.53, 534,632.12 and 322,735.39 is: 445,427.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,368.53 : 534,632.12 = 322,735.39 : x
  2. Step 2: Convert to fraction form
    387,368.53/534,632.12 = 322,735.39/x
  3. Step 3: Cross multiply
    387,368.53x = 534,632.12 × 322,735.39
  4. Step 4: Simplify right side
    387,368.53x = 172,544,704,141.05
  5. Step 5: Solve for x
    x = 172,544,704,141.05/387,368.53
  6. Step 6: Final answer
    x = 445,427.78

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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.