Home / 213,395.20-294,392.88-128,463.06

Finding the Fourth Proportional to 213,395.20, 294,392.88 and 128,463.06

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Solution

The fourth proportional to 213,395.20, 294,392.88 and 128,463.06 is: 177,223.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,395.20 : 294,392.88 = 128,463.06 : x
  2. Step 2: Convert to fraction form
    213,395.20/294,392.88 = 128,463.06/x
  3. Step 3: Cross multiply
    213,395.20x = 294,392.88 × 128,463.06
  4. Step 4: Simplify right side
    213,395.20x = 37,818,610,207.01
  5. Step 5: Solve for x
    x = 37,818,610,207.01/213,395.20
  6. Step 6: Final answer
    x = 177,223.34

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1.5x scale

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.