Home / 305,331.75-421,376.90-176,293.83

Finding the Fourth Proportional to 305,331.75, 421,376.90 and 176,293.83

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Solution

The fourth proportional to 305,331.75, 421,376.90 and 176,293.83 is: 243,296.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,331.75 : 421,376.90 = 176,293.83 : x
  2. Step 2: Convert to fraction form
    305,331.75/421,376.90 = 176,293.83/x
  3. Step 3: Cross multiply
    305,331.75x = 421,376.90 × 176,293.83
  4. Step 4: Simplify right side
    305,331.75x = 74,286,146,693.06
  5. Step 5: Solve for x
    x = 74,286,146,693.06/305,331.75
  6. Step 6: Final answer
    x = 243,296.50

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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.