Home / 223,534.46-308,465.09-128,047.31

Finding the Fourth Proportional to 223,534.46, 308,465.09 and 128,047.31

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Solution

The fourth proportional to 223,534.46, 308,465.09 and 128,047.31 is: 176,698.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,534.46 : 308,465.09 = 128,047.31 : x
  2. Step 2: Convert to fraction form
    223,534.46/308,465.09 = 128,047.31/x
  3. Step 3: Cross multiply
    223,534.46x = 308,465.09 × 128,047.31
  4. Step 4: Simplify right side
    223,534.46x = 39,498,125,003.41
  5. Step 5: Solve for x
    x = 39,498,125,003.41/223,534.46
  6. Step 6: Final answer
    x = 176,698.15

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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.