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Finding the Fourth Proportional to 403,955.40, 605,058.30 and 359,632.20

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Solution

The fourth proportional to 403,955.40, 605,058.30 and 359,632.20 is: 538,669.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,955.40 : 605,058.30 = 359,632.20 : x
  2. Step 2: Convert to fraction form
    403,955.40/605,058.30 = 359,632.20/x
  3. Step 3: Cross multiply
    403,955.40x = 605,058.30 × 359,632.20
  4. Step 4: Simplify right side
    403,955.40x = 217,598,447,557.26
  5. Step 5: Solve for x
    x = 217,598,447,557.26/403,955.40
  6. Step 6: Final answer
    x = 538,669.49

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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.