Home / 385,176.88-531,542.28-215,411.68

Finding the Fourth Proportional to 385,176.88, 531,542.28 and 215,411.68

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Solution

The fourth proportional to 385,176.88, 531,542.28 and 215,411.68 is: 297,267.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,176.88 : 531,542.28 = 215,411.68 : x
  2. Step 2: Convert to fraction form
    385,176.88/531,542.28 = 215,411.68/x
  3. Step 3: Cross multiply
    385,176.88x = 531,542.28 × 215,411.68
  4. Step 4: Simplify right side
    385,176.88x = 114,500,415,525.83
  5. Step 5: Solve for x
    x = 114,500,415,525.83/385,176.88
  6. Step 6: Final answer
    x = 297,267.10

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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.