Home / 378,115.02-521,775.27-216,983.34

Finding the Fourth Proportional to 378,115.02, 521,775.27 and 216,983.34

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Solution

The fourth proportional to 378,115.02, 521,775.27 and 216,983.34 is: 299,423.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,115.02 : 521,775.27 = 216,983.34 : x
  2. Step 2: Convert to fraction form
    378,115.02/521,775.27 = 216,983.34/x
  3. Step 3: Cross multiply
    378,115.02x = 521,775.27 × 216,983.34
  4. Step 4: Simplify right side
    378,115.02x = 113,216,540,814.00
  5. Step 5: Solve for x
    x = 113,216,540,814.00/378,115.02
  6. Step 6: Final answer
    x = 299,423.55

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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.