Home / 387,231.95-534,437.83-305,372.54

Finding the Fourth Proportional to 387,231.95, 534,437.83 and 305,372.54

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Solution

The fourth proportional to 387,231.95, 534,437.83 and 305,372.54 is: 421,459.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,231.95 : 534,437.83 = 305,372.54 : x
  2. Step 2: Convert to fraction form
    387,231.95/534,437.83 = 305,372.54/x
  3. Step 3: Cross multiply
    387,231.95x = 534,437.83 × 305,372.54
  4. Step 4: Simplify right side
    387,231.95x = 163,202,639,337.00
  5. Step 5: Solve for x
    x = 163,202,639,337.00/387,231.95
  6. Step 6: Final answer
    x = 421,459.64

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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.