Home / 438,318.12-656,928.34-235,415.61

Finding the Fourth Proportional to 438,318.12, 656,928.34 and 235,415.61

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Solution

The fourth proportional to 438,318.12, 656,928.34 and 235,415.61 is: 352,828.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    438,318.12 : 656,928.34 = 235,415.61 : x
  2. Step 2: Convert to fraction form
    438,318.12/656,928.34 = 235,415.61/x
  3. Step 3: Cross multiply
    438,318.12x = 656,928.34 × 235,415.61
  4. Step 4: Simplify right side
    438,318.12x = 154,651,185,887.39
  5. Step 5: Solve for x
    x = 154,651,185,887.39/438,318.12
  6. Step 6: Final answer
    x = 352,828.64

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.