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Finding the Fourth Proportional to 385,715.18, 532,275.18 and 213,626.32

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Solution

The fourth proportional to 385,715.18, 532,275.18 and 213,626.32 is: 294,797.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,715.18 : 532,275.18 = 213,626.32 : x
  2. Step 2: Convert to fraction form
    385,715.18/532,275.18 = 213,626.32/x
  3. Step 3: Cross multiply
    385,715.18x = 532,275.18 × 213,626.32
  4. Step 4: Simplify right side
    385,715.18x = 113,707,987,930.74
  5. Step 5: Solve for x
    x = 113,707,987,930.74/385,715.18
  6. Step 6: Final answer
    x = 294,797.80

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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.