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Finding the Fourth Proportional to 348,561.20, 522,064.20 and 286,353.20

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Solution

The fourth proportional to 348,561.20, 522,064.20 and 286,353.20 is: 428,890.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    348,561.20 : 522,064.20 = 286,353.20 : x
  2. Step 2: Convert to fraction form
    348,561.20/522,064.20 = 286,353.20/x
  3. Step 3: Cross multiply
    348,561.20x = 522,064.20 × 286,353.20
  4. Step 4: Simplify right side
    348,561.20x = 149,494,754,275.44
  5. Step 5: Solve for x
    x = 149,494,754,275.44/348,561.20
  6. Step 6: Final answer
    x = 428,890.98

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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.