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Finding the Fourth Proportional to 343,607.94, 514,885.82 and 143,819.55

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Solution

The fourth proportional to 343,607.94, 514,885.82 and 143,819.55 is: 215,509.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,607.94 : 514,885.82 = 143,819.55 : x
  2. Step 2: Convert to fraction form
    343,607.94/514,885.82 = 143,819.55/x
  3. Step 3: Cross multiply
    343,607.94x = 514,885.82 × 143,819.55
  4. Step 4: Simplify right side
    343,607.94x = 74,050,646,214.68
  5. Step 5: Solve for x
    x = 74,050,646,214.68/343,607.94
  6. Step 6: Final answer
    x = 215,509.12

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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.