Home / 385,275.56-531,651.39-215,476.88

Finding the Fourth Proportional to 385,275.56, 531,651.39 and 215,476.88

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Solution

The fourth proportional to 385,275.56, 531,651.39 and 215,476.88 is: 297,341.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,275.56 : 531,651.39 = 215,476.88 : x
  2. Step 2: Convert to fraction form
    385,275.56/531,651.39 = 215,476.88/x
  3. Step 3: Cross multiply
    385,275.56x = 531,651.39 × 215,476.88
  4. Step 4: Simplify right side
    385,275.56x = 114,558,582,764.86
  5. Step 5: Solve for x
    x = 114,558,582,764.86/385,275.56
  6. Step 6: Final answer
    x = 297,341.94

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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.