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Finding the Fourth Proportional to 385,800.69, 532,392.90 and 213,711.74

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Solution

The fourth proportional to 385,800.69, 532,392.90 and 213,711.74 is: 294,915.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,800.69 : 532,392.90 = 213,711.74 : x
  2. Step 2: Convert to fraction form
    385,800.69/532,392.90 = 213,711.74/x
  3. Step 3: Cross multiply
    385,800.69x = 532,392.90 × 213,711.74
  4. Step 4: Simplify right side
    385,800.69x = 113,778,610,360.68
  5. Step 5: Solve for x
    x = 113,778,610,360.68/385,800.69
  6. Step 6: Final answer
    x = 294,915.52

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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.