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Finding the Fourth Proportional to 343,037.45, 514,557.30 and 86,869.88

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Solution

The fourth proportional to 343,037.45, 514,557.30 and 86,869.88 is: 130,305.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,037.45 : 514,557.30 = 86,869.88 : x
  2. Step 2: Convert to fraction form
    343,037.45/514,557.30 = 86,869.88/x
  3. Step 3: Cross multiply
    343,037.45x = 514,557.30 × 86,869.88
  4. Step 4: Simplify right side
    343,037.45x = 44,699,529,617.73
  5. Step 5: Solve for x
    x = 44,699,529,617.73/343,037.45
  6. Step 6: Final answer
    x = 130,305.10

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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.