Home / 288,921.30-432,988.28-139,150.68

Finding the Fourth Proportional to 288,921.30, 432,988.28 and 139,150.68

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Solution

The fourth proportional to 288,921.30, 432,988.28 and 139,150.68 is: 208,536.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,921.30 : 432,988.28 = 139,150.68 : x
  2. Step 2: Convert to fraction form
    288,921.30/432,988.28 = 139,150.68/x
  3. Step 3: Cross multiply
    288,921.30x = 432,988.28 × 139,150.68
  4. Step 4: Simplify right side
    288,921.30x = 60,250,613,594.03
  5. Step 5: Solve for x
    x = 60,250,613,594.03/288,921.30
  6. Step 6: Final answer
    x = 208,536.42

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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.