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Finding the Fourth Proportional to 359,664.20, 539,496.30 and 122,971.40

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Solution

The fourth proportional to 359,664.20, 539,496.30 and 122,971.40 is: 184,457.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,664.20 : 539,496.30 = 122,971.40 : x
  2. Step 2: Convert to fraction form
    359,664.20/539,496.30 = 122,971.40/x
  3. Step 3: Cross multiply
    359,664.20x = 539,496.30 × 122,971.40
  4. Step 4: Simplify right side
    359,664.20x = 66,342,615,305.82
  5. Step 5: Solve for x
    x = 66,342,615,305.82/359,664.20
  6. Step 6: Final answer
    x = 184,457.10

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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.