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Finding the Fourth Proportional to 353,175.20, 528,985.20 and 306,519.20

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Solution

The fourth proportional to 353,175.20, 528,985.20 and 306,519.20 is: 459,103.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,175.20 : 528,985.20 = 306,519.20 : x
  2. Step 2: Convert to fraction form
    353,175.20/528,985.20 = 306,519.20/x
  3. Step 3: Cross multiply
    353,175.20x = 528,985.20 × 306,519.20
  4. Step 4: Simplify right side
    353,175.20x = 162,144,120,315.84
  5. Step 5: Solve for x
    x = 162,144,120,315.84/353,175.20
  6. Step 6: Final answer
    x = 459,103.92

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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.