Home / 378,946.51-522,927.82-215,587.64

Finding the Fourth Proportional to 378,946.51, 522,927.82 and 215,587.64

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Solution

The fourth proportional to 378,946.51, 522,927.82 and 215,587.64 is: 297,500.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,946.51 : 522,927.82 = 215,587.64 : x
  2. Step 2: Convert to fraction form
    378,946.51/522,927.82 = 215,587.64/x
  3. Step 3: Cross multiply
    378,946.51x = 522,927.82 × 215,587.64
  4. Step 4: Simplify right side
    378,946.51x = 112,736,772,585.54
  5. Step 5: Solve for x
    x = 112,736,772,585.54/378,946.51
  6. Step 6: Final answer
    x = 297,500.49

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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.