Home / 257,830.13-355,798.76-143,108.46

Finding the Fourth Proportional to 257,830.13, 355,798.76 and 143,108.46

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Solution

The fourth proportional to 257,830.13, 355,798.76 and 143,108.46 is: 197,485.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,830.13 : 355,798.76 = 143,108.46 : x
  2. Step 2: Convert to fraction form
    257,830.13/355,798.76 = 143,108.46/x
  3. Step 3: Cross multiply
    257,830.13x = 355,798.76 × 143,108.46
  4. Step 4: Simplify right side
    257,830.13x = 50,917,811,897.97
  5. Step 5: Solve for x
    x = 50,917,811,897.97/257,830.13
  6. Step 6: Final answer
    x = 197,485.89

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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.