Home / 223,313.80-308,221.70-137,346.72

Finding the Fourth Proportional to 223,313.80, 308,221.70 and 137,346.72

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Solution

The fourth proportional to 223,313.80, 308,221.70 and 137,346.72 is: 189,568.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,313.80 : 308,221.70 = 137,346.72 : x
  2. Step 2: Convert to fraction form
    223,313.80/308,221.70 = 137,346.72/x
  3. Step 3: Cross multiply
    223,313.80x = 308,221.70 × 137,346.72
  4. Step 4: Simplify right side
    223,313.80x = 42,333,239,527.82
  5. Step 5: Solve for x
    x = 42,333,239,527.82/223,313.80
  6. Step 6: Final answer
    x = 189,568.40

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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.