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Finding the Fourth Proportional to 577,313.46, 865,818.45 and 172,409.58

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Solution

The fourth proportional to 577,313.46, 865,818.45 and 172,409.58 is: 258,569.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,313.46 : 865,818.45 = 172,409.58 : x
  2. Step 2: Convert to fraction form
    577,313.46/865,818.45 = 172,409.58/x
  3. Step 3: Cross multiply
    577,313.46x = 865,818.45 × 172,409.58
  4. Step 4: Simplify right side
    577,313.46x = 149,275,395,320.75
  5. Step 5: Solve for x
    x = 149,275,395,320.75/577,313.46
  6. Step 6: Final answer
    x = 258,569.05

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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.