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Finding the Fourth Proportional to 485,420.94, 669,903.93 and 270,562.59

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Solution

The fourth proportional to 485,420.94, 669,903.93 and 270,562.59 is: 373,389.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    485,420.94 : 669,903.93 = 270,562.59 : x
  2. Step 2: Convert to fraction form
    485,420.94/669,903.93 = 270,562.59/x
  3. Step 3: Cross multiply
    485,420.94x = 669,903.93 × 270,562.59
  4. Step 4: Simplify right side
    485,420.94x = 181,250,942,351.98
  5. Step 5: Solve for x
    x = 181,250,942,351.98/485,420.94
  6. Step 6: Final answer
    x = 373,389.21

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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.