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Finding the Fourth Proportional to 343,168.86, 514,577.76 and 143,434.74

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Solution

The fourth proportional to 343,168.86, 514,577.76 and 143,434.74 is: 215,078.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,168.86 : 514,577.76 = 143,434.74 : x
  2. Step 2: Convert to fraction form
    343,168.86/514,577.76 = 143,434.74/x
  3. Step 3: Cross multiply
    343,168.86x = 514,577.76 × 143,434.74
  4. Step 4: Simplify right side
    343,168.86x = 73,808,327,215.38
  5. Step 5: Solve for x
    x = 73,808,327,215.38/343,168.86
  6. Step 6: Final answer
    x = 215,078.74

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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.