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Finding the Fourth Proportional to 611,222.48, 843,397.32 and 353,001.68

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Solution

The fourth proportional to 611,222.48, 843,397.32 and 353,001.68 is: 487,090.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    611,222.48 : 843,397.32 = 353,001.68 : x
  2. Step 2: Convert to fraction form
    611,222.48/843,397.32 = 353,001.68/x
  3. Step 3: Cross multiply
    611,222.48x = 843,397.32 × 353,001.68
  4. Step 4: Simplify right side
    611,222.48x = 297,720,670,867.50
  5. Step 5: Solve for x
    x = 297,720,670,867.50/611,222.48
  6. Step 6: Final answer
    x = 487,090.51

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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.