Home / 288,021.20-432,031.80-169,631.60

Finding the Fourth Proportional to 288,021.20, 432,031.80 and 169,631.60

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Solution

The fourth proportional to 288,021.20, 432,031.80 and 169,631.60 is: 254,447.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,021.20 : 432,031.80 = 169,631.60 : x
  2. Step 2: Convert to fraction form
    288,021.20/432,031.80 = 169,631.60/x
  3. Step 3: Cross multiply
    288,021.20x = 432,031.80 × 169,631.60
  4. Step 4: Simplify right side
    288,021.20x = 73,286,245,484.88
  5. Step 5: Solve for x
    x = 73,286,245,484.88/288,021.20
  6. Step 6: Final answer
    x = 254,447.40

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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.