Home / 378,328.18-522,066.72-212,780.93

Finding the Fourth Proportional to 378,328.18, 522,066.72 and 212,780.93

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Solution

The fourth proportional to 378,328.18, 522,066.72 and 212,780.93 is: 293,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,328.18 : 522,066.72 = 212,780.93 : x
  2. Step 2: Convert to fraction form
    378,328.18/522,066.72 = 212,780.93/x
  3. Step 3: Cross multiply
    378,328.18x = 522,066.72 × 212,780.93
  4. Step 4: Simplify right side
    378,328.18x = 111,085,841,139.75
  5. Step 5: Solve for x
    x = 111,085,841,139.75/378,328.18
  6. Step 6: Final answer
    x = 293,622.97

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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.