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Finding the Fourth Proportional to 343,411.68, 515,018.88 and 118,713.36

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Solution

The fourth proportional to 343,411.68, 515,018.88 and 118,713.36 is: 178,035.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,411.68 : 515,018.88 = 118,713.36 : x
  2. Step 2: Convert to fraction form
    343,411.68/515,018.88 = 118,713.36/x
  3. Step 3: Cross multiply
    343,411.68x = 515,018.88 × 118,713.36
  4. Step 4: Simplify right side
    343,411.68x = 61,139,621,708.24
  5. Step 5: Solve for x
    x = 61,139,621,708.24/343,411.68
  6. Step 6: Final answer
    x = 178,035.94

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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.