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Finding the Fourth Proportional to 348,859.80, 522,123.30 and 306,869.40

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Solution

The fourth proportional to 348,859.80, 522,123.30 and 306,869.40 is: 459,278.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,859.80 : 522,123.30 = 306,869.40 : x
  2. Step 2: Convert to fraction form
    348,859.80/522,123.30 = 306,869.40/x
  3. Step 3: Cross multiply
    348,859.80x = 522,123.30 × 306,869.40
  4. Step 4: Simplify right side
    348,859.80x = 160,223,663,797.02
  5. Step 5: Solve for x
    x = 160,223,663,797.02/348,859.80
  6. Step 6: Final answer
    x = 459,278.09

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.