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Finding the Fourth Proportional to 349,779.60, 524,280.60 and 192,121.20

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Solution

The fourth proportional to 349,779.60, 524,280.60 and 192,121.20 is: 287,968.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,779.60 : 524,280.60 = 192,121.20 : x
  2. Step 2: Convert to fraction form
    349,779.60/524,280.60 = 192,121.20/x
  3. Step 3: Cross multiply
    349,779.60x = 524,280.60 × 192,121.20
  4. Step 4: Simplify right side
    349,779.60x = 100,725,418,008.72
  5. Step 5: Solve for x
    x = 100,725,418,008.72/349,779.60
  6. Step 6: Final answer
    x = 287,968.25

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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.