Home / 213,397.20-294,395.64-128,465.06

Finding the Fourth Proportional to 213,397.20, 294,395.64 and 128,465.06

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Solution

The fourth proportional to 213,397.20, 294,395.64 and 128,465.06 is: 177,226.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,397.20 : 294,395.64 = 128,465.06 : x
  2. Step 2: Convert to fraction form
    213,397.20/294,395.64 = 128,465.06/x
  3. Step 3: Cross multiply
    213,397.20x = 294,395.64 × 128,465.06
  4. Step 4: Simplify right side
    213,397.20x = 37,819,553,556.34
  5. Step 5: Solve for x
    x = 37,819,553,556.34/213,397.20
  6. Step 6: Final answer
    x = 177,226.10

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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.