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Finding the Fourth Proportional to 665,345.16, 998,763.78 and 266,264.10

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Solution

The fourth proportional to 665,345.16, 998,763.78 and 266,264.10 is: 399,694.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,345.16 : 998,763.78 = 266,264.10 : x
  2. Step 2: Convert to fraction form
    665,345.16/998,763.78 = 266,264.10/x
  3. Step 3: Cross multiply
    665,345.16x = 998,763.78 × 266,264.10
  4. Step 4: Simplify right side
    665,345.16x = 265,934,938,994.30
  5. Step 5: Solve for x
    x = 265,934,938,994.30/665,345.16
  6. Step 6: Final answer
    x = 399,694.71

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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.