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Finding the Fourth Proportional to 378,176.94, 521,718.84 and 270,707.76

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Solution

The fourth proportional to 378,176.94, 521,718.84 and 270,707.76 is: 373,458.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,176.94 : 521,718.84 = 270,707.76 : x
  2. Step 2: Convert to fraction form
    378,176.94/521,718.84 = 270,707.76/x
  3. Step 3: Cross multiply
    378,176.94x = 521,718.84 × 270,707.76
  4. Step 4: Simplify right side
    378,176.94x = 141,233,338,526.20
  5. Step 5: Solve for x
    x = 141,233,338,526.20/378,176.94
  6. Step 6: Final answer
    x = 373,458.36

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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.