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Finding the Fourth Proportional to 438,910.32, 605,453.73 and 357,326.33

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Solution

The fourth proportional to 438,910.32, 605,453.73 and 357,326.33 is: 492,912.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,910.32 : 605,453.73 = 357,326.33 : x
  2. Step 2: Convert to fraction form
    438,910.32/605,453.73 = 357,326.33/x
  3. Step 3: Cross multiply
    438,910.32x = 605,453.73 × 357,326.33
  4. Step 4: Simplify right side
    438,910.32x = 216,344,559,325.71
  5. Step 5: Solve for x
    x = 216,344,559,325.71/438,910.32
  6. Step 6: Final answer
    x = 492,912.90

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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.