Home / 378,914.06-522,901.46-209,148.23

Finding the Fourth Proportional to 378,914.06, 522,901.46 and 209,148.23

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Solution

The fourth proportional to 378,914.06, 522,901.46 and 209,148.23 is: 288,624.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,914.06 : 522,901.46 = 209,148.23 : x
  2. Step 2: Convert to fraction form
    378,914.06/522,901.46 = 209,148.23/x
  3. Step 3: Cross multiply
    378,914.06x = 522,901.46 × 209,148.23
  4. Step 4: Simplify right side
    378,914.06x = 109,363,914,823.42
  5. Step 5: Solve for x
    x = 109,363,914,823.42/378,914.06
  6. Step 6: Final answer
    x = 288,624.59

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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.