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Finding the Fourth Proportional to 665,353.98, 998,029.96 and 266,088.38

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Solution

The fourth proportional to 665,353.98, 998,029.96 and 266,088.38 is: 399,132.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,353.98 : 998,029.96 = 266,088.38 : x
  2. Step 2: Convert to fraction form
    665,353.98/998,029.96 = 266,088.38/x
  3. Step 3: Cross multiply
    665,353.98x = 998,029.96 × 266,088.38
  4. Step 4: Simplify right side
    665,353.98x = 265,564,169,592.49
  5. Step 5: Solve for x
    x = 265,564,169,592.49/665,353.98
  6. Step 6: Final answer
    x = 399,132.16

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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.