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Finding the Fourth Proportional to 343,603.52, 514,879.26 and 143,815.16

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Solution

The fourth proportional to 343,603.52, 514,879.26 and 143,815.16 is: 215,502.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,603.52 : 514,879.26 = 143,815.16 : x
  2. Step 2: Convert to fraction form
    343,603.52/514,879.26 = 143,815.16/x
  3. Step 3: Cross multiply
    343,603.52x = 514,879.26 × 143,815.16
  4. Step 4: Simplify right side
    343,603.52x = 74,047,443,157.58
  5. Step 5: Solve for x
    x = 74,047,443,157.58/343,603.52
  6. Step 6: Final answer
    x = 215,502.57

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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.