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Finding the Fourth Proportional to 266,210.84, 399,314.64 and 66,530.18

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Solution

The fourth proportional to 266,210.84, 399,314.64 and 66,530.18 is: 99,794.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    266,210.84 : 399,314.64 = 66,530.18 : x
  2. Step 2: Convert to fraction form
    266,210.84/399,314.64 = 66,530.18/x
  3. Step 3: Cross multiply
    266,210.84x = 399,314.64 × 66,530.18
  4. Step 4: Simplify right side
    266,210.84x = 26,566,474,875.84
  5. Step 5: Solve for x
    x = 26,566,474,875.84/266,210.84
  6. Step 6: Final answer
    x = 99,794.87

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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.