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Finding the Fourth Proportional to 508,342.77, 701,531.69 and 307,099.89

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Solution

The fourth proportional to 508,342.77, 701,531.69 and 307,099.89 is: 423,809.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    508,342.77 : 701,531.69 = 307,099.89 : x
  2. Step 2: Convert to fraction form
    508,342.77/701,531.69 = 307,099.89/x
  3. Step 3: Cross multiply
    508,342.77x = 701,531.69 × 307,099.89
  4. Step 4: Simplify right side
    508,342.77x = 215,440,303,295.02
  5. Step 5: Solve for x
    x = 215,440,303,295.02/508,342.77
  6. Step 6: Final answer
    x = 423,809.12

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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.