Home / 280,060.39-386,533.68-165,332.30

Finding the Fourth Proportional to 280,060.39, 386,533.68 and 165,332.30

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Solution

The fourth proportional to 280,060.39, 386,533.68 and 165,332.30 is: 228,188.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,060.39 : 386,533.68 = 165,332.30 : x
  2. Step 2: Convert to fraction form
    280,060.39/386,533.68 = 165,332.30/x
  3. Step 3: Cross multiply
    280,060.39x = 386,533.68 × 165,332.30
  4. Step 4: Simplify right side
    280,060.39x = 63,906,503,669.51
  5. Step 5: Solve for x
    x = 63,906,503,669.51/280,060.39
  6. Step 6: Final answer
    x = 228,188.30

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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.