Home / 257,923.98-387,166.23-218,128.28

Finding the Fourth Proportional to 257,923.98, 387,166.23 and 218,128.28

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Solution

The fourth proportional to 257,923.98, 387,166.23 and 218,128.28 is: 327,429.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    257,923.98 : 387,166.23 = 218,128.28 : x
  2. Step 2: Convert to fraction form
    257,923.98/387,166.23 = 218,128.28/x
  3. Step 3: Cross multiply
    257,923.98x = 387,166.23 × 218,128.28
  4. Step 4: Simplify right side
    257,923.98x = 84,451,901,888.15
  5. Step 5: Solve for x
    x = 84,451,901,888.15/257,923.98
  6. Step 6: Final answer
    x = 327,429.43

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1.5x scale

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.