Home / 289,229.04-399,132-161,904.48

Finding the Fourth Proportional to 289,229.04, 399,132 and 161,904.48

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Solution

The fourth proportional to 289,229.04, 399,132 and 161,904.48 is: 223,425.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,229.04 : 399,132 = 161,904.48 : x
  2. Step 2: Convert to fraction form
    289,229.04/399,132 = 161,904.48/x
  3. Step 3: Cross multiply
    289,229.04x = 399,132 × 161,904.48
  4. Step 4: Simplify right side
    289,229.04x = 64,621,258,911.36
  5. Step 5: Solve for x
    x = 64,621,258,911.36/289,229.04
  6. Step 6: Final answer
    x = 223,425.90

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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.