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Finding the Fourth Proportional to 275,818.94, 380,646.36 and 207,715.76

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Solution

The fourth proportional to 275,818.94, 380,646.36 and 207,715.76 is: 286,659.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,818.94 : 380,646.36 = 207,715.76 : x
  2. Step 2: Convert to fraction form
    275,818.94/380,646.36 = 207,715.76/x
  3. Step 3: Cross multiply
    275,818.94x = 380,646.36 × 207,715.76
  4. Step 4: Simplify right side
    275,818.94x = 79,066,247,958.63
  5. Step 5: Solve for x
    x = 79,066,247,958.63/275,818.94
  6. Step 6: Final answer
    x = 286,659.97

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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.