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Finding the Fourth Proportional to 665,359.95, 998,122.83 and 260,499.81

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Solution

The fourth proportional to 665,359.95, 998,122.83 and 260,499.81 is: 390,782.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,359.95 : 998,122.83 = 260,499.81 : x
  2. Step 2: Convert to fraction form
    665,359.95/998,122.83 = 260,499.81/x
  3. Step 3: Cross multiply
    665,359.95x = 998,122.83 × 260,499.81
  4. Step 4: Simplify right side
    665,359.95x = 260,010,807,571.66
  5. Step 5: Solve for x
    x = 260,010,807,571.66/665,359.95
  6. Step 6: Final answer
    x = 390,782.17

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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.