Home / 289,230.04-399,133.38-161,905.48

Finding the Fourth Proportional to 289,230.04, 399,133.38 and 161,905.48

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Solution

The fourth proportional to 289,230.04, 399,133.38 and 161,905.48 is: 223,427.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,230.04 : 399,133.38 = 161,905.48 : x
  2. Step 2: Convert to fraction form
    289,230.04/399,133.38 = 161,905.48/x
  3. Step 3: Cross multiply
    289,230.04x = 399,133.38 × 161,905.48
  4. Step 4: Simplify right side
    289,230.04x = 64,621,881,472.92
  5. Step 5: Solve for x
    x = 64,621,881,472.92/289,230.04
  6. Step 6: Final answer
    x = 223,427.28

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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.