Home / 403,023.48-556,172.37-221,731.53

Finding the Fourth Proportional to 403,023.48, 556,172.37 and 221,731.53

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Solution

The fourth proportional to 403,023.48, 556,172.37 and 221,731.53 is: 305,989.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,023.48 : 556,172.37 = 221,731.53 : x
  2. Step 2: Convert to fraction form
    403,023.48/556,172.37 = 221,731.53/x
  3. Step 3: Cross multiply
    403,023.48x = 556,172.37 × 221,731.53
  4. Step 4: Simplify right side
    403,023.48x = 123,320,950,543.83
  5. Step 5: Solve for x
    x = 123,320,950,543.83/403,023.48
  6. Step 6: Final answer
    x = 305,989.49

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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.