Home / 428,270.45-642,186.97-158,384.93

Finding the Fourth Proportional to 428,270.45, 642,186.97 and 158,384.93

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Solution

The fourth proportional to 428,270.45, 642,186.97 and 158,384.93 is: 237,496.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    428,270.45 : 642,186.97 = 158,384.93 : x
  2. Step 2: Convert to fraction form
    428,270.45/642,186.97 = 158,384.93/x
  3. Step 3: Cross multiply
    428,270.45x = 642,186.97 × 158,384.93
  4. Step 4: Simplify right side
    428,270.45x = 101,712,738,290.36
  5. Step 5: Solve for x
    x = 101,712,738,290.36/428,270.45
  6. Step 6: Final answer
    x = 237,496.51

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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.