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Finding the Fourth Proportional to 352,344.90, 528,345.12 and 245,779.92

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Solution

The fourth proportional to 352,344.90, 528,345.12 and 245,779.92 is: 368,549.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,344.90 : 528,345.12 = 245,779.92 : x
  2. Step 2: Convert to fraction form
    352,344.90/528,345.12 = 245,779.92/x
  3. Step 3: Cross multiply
    352,344.90x = 528,345.12 × 245,779.92
  4. Step 4: Simplify right side
    352,344.90x = 129,856,621,325.99
  5. Step 5: Solve for x
    x = 129,856,621,325.99/352,344.90
  6. Step 6: Final answer
    x = 368,549.74

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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.