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Finding the Fourth Proportional to 385,835.76, 532,423.80 and 216,046.80

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Solution

The fourth proportional to 385,835.76, 532,423.80 and 216,046.80 is: 298,128.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,835.76 : 532,423.80 = 216,046.80 : x
  2. Step 2: Convert to fraction form
    385,835.76/532,423.80 = 216,046.80/x
  3. Step 3: Cross multiply
    385,835.76x = 532,423.80 × 216,046.80
  4. Step 4: Simplify right side
    385,835.76x = 115,028,458,233.84
  5. Step 5: Solve for x
    x = 115,028,458,233.84/385,835.76
  6. Step 6: Final answer
    x = 298,128.04

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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.