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Finding the Fourth Proportional to 558,209.79, 770,322.29 and 303,555.51

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Solution

The fourth proportional to 558,209.79, 770,322.29 and 303,555.51 is: 418,902.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    558,209.79 : 770,322.29 = 303,555.51 : x
  2. Step 2: Convert to fraction form
    558,209.79/770,322.29 = 303,555.51/x
  3. Step 3: Cross multiply
    558,209.79x = 770,322.29 × 303,555.51
  4. Step 4: Simplify right side
    558,209.79x = 233,835,574,087.54
  5. Step 5: Solve for x
    x = 233,835,574,087.54/558,209.79
  6. Step 6: Final answer
    x = 418,902.67

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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.