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Finding the Fourth Proportional to 343,639.68, 515,533.68 and 103,733.72

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Solution

The fourth proportional to 343,639.68, 515,533.68 and 103,733.72 is: 155,622.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,639.68 : 515,533.68 = 103,733.72 : x
  2. Step 2: Convert to fraction form
    343,639.68/515,533.68 = 103,733.72/x
  3. Step 3: Cross multiply
    343,639.68x = 515,533.68 × 103,733.72
  4. Step 4: Simplify right side
    343,639.68x = 53,478,226,411.69
  5. Step 5: Solve for x
    x = 53,478,226,411.69/343,639.68
  6. Step 6: Final answer
    x = 155,622.97

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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.