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Finding the Fourth Proportional to 469,995.13, 648,761.77 and 279,008.67

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Solution

The fourth proportional to 469,995.13, 648,761.77 and 279,008.67 is: 385,131.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,995.13 : 648,761.77 = 279,008.67 : x
  2. Step 2: Convert to fraction form
    469,995.13/648,761.77 = 279,008.67/x
  3. Step 3: Cross multiply
    469,995.13x = 648,761.77 × 279,008.67
  4. Step 4: Simplify right side
    469,995.13x = 181,010,158,594.55
  5. Step 5: Solve for x
    x = 181,010,158,594.55/469,995.13
  6. Step 6: Final answer
    x = 385,131.99

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.