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Finding the Fourth Proportional to 403,316.70, 605,061.45 and 122,862.30

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Solution

The fourth proportional to 403,316.70, 605,061.45 and 122,862.30 is: 184,319.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    403,316.70 : 605,061.45 = 122,862.30 : x
  2. Step 2: Convert to fraction form
    403,316.70/605,061.45 = 122,862.30/x
  3. Step 3: Cross multiply
    403,316.70x = 605,061.45 × 122,862.30
  4. Step 4: Simplify right side
    403,316.70x = 74,339,241,388.34
  5. Step 5: Solve for x
    x = 74,339,241,388.34/403,316.70
  6. Step 6: Final answer
    x = 184,319.77

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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.