Home / 387,731.86-535,029.16-215,621.94

Finding the Fourth Proportional to 387,731.86, 535,029.16 and 215,621.94

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Solution

The fourth proportional to 387,731.86, 535,029.16 and 215,621.94 is: 297,535.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,731.86 : 535,029.16 = 215,621.94 : x
  2. Step 2: Convert to fraction form
    387,731.86/535,029.16 = 215,621.94/x
  3. Step 3: Cross multiply
    387,731.86x = 535,029.16 × 215,621.94
  4. Step 4: Simplify right side
    387,731.86x = 115,364,025,435.77
  5. Step 5: Solve for x
    x = 115,364,025,435.77/387,731.86
  6. Step 6: Final answer
    x = 297,535.58

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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.