Home / 426,014.82-638,365.38-209,625.18

Finding the Fourth Proportional to 426,014.82, 638,365.38 and 209,625.18

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Solution

The fourth proportional to 426,014.82, 638,365.38 and 209,625.18 is: 314,114.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,014.82 : 638,365.38 = 209,625.18 : x
  2. Step 2: Convert to fraction form
    426,014.82/638,365.38 = 209,625.18/x
  3. Step 3: Cross multiply
    426,014.82x = 638,365.38 × 209,625.18
  4. Step 4: Simplify right side
    426,014.82x = 133,817,457,688.27
  5. Step 5: Solve for x
    x = 133,817,457,688.27/426,014.82
  6. Step 6: Final answer
    x = 314,114.56

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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.