Home / 387,932.15-535,682.76-286,134.05

Finding the Fourth Proportional to 387,932.15, 535,682.76 and 286,134.05

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Solution

The fourth proportional to 387,932.15, 535,682.76 and 286,134.05 is: 395,113.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,932.15 : 535,682.76 = 286,134.05 : x
  2. Step 2: Convert to fraction form
    387,932.15/535,682.76 = 286,134.05/x
  3. Step 3: Cross multiply
    387,932.15x = 535,682.76 × 286,134.05
  4. Step 4: Simplify right side
    387,932.15x = 153,277,077,633.98
  5. Step 5: Solve for x
    x = 153,277,077,633.98/387,932.15
  6. Step 6: Final answer
    x = 395,113.11

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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.