Home / 385,175.13-531,539.87-215,409.93

Finding the Fourth Proportional to 385,175.13, 531,539.87 and 215,409.93

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Solution

The fourth proportional to 385,175.13, 531,539.87 and 215,409.93 is: 297,264.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,175.13 : 531,539.87 = 215,409.93 : x
  2. Step 2: Convert to fraction form
    385,175.13/531,539.87 = 215,409.93/x
  3. Step 3: Cross multiply
    385,175.13x = 531,539.87 × 215,409.93
  4. Step 4: Simplify right side
    385,175.13x = 114,498,965,111.86
  5. Step 5: Solve for x
    x = 114,498,965,111.86/385,175.13
  6. Step 6: Final answer
    x = 297,264.69

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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.