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Finding the Fourth Proportional to 387,962.94, 535,634.79 and 265,659.96

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Solution

The fourth proportional to 387,962.94, 535,634.79 and 265,659.96 is: 366,779.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,962.94 : 535,634.79 = 265,659.96 : x
  2. Step 2: Convert to fraction form
    387,962.94/535,634.79 = 265,659.96/x
  3. Step 3: Cross multiply
    387,962.94x = 535,634.79 × 265,659.96
  4. Step 4: Simplify right side
    387,962.94x = 142,296,716,886.01
  5. Step 5: Solve for x
    x = 142,296,716,886.01/387,962.94
  6. Step 6: Final answer
    x = 366,779.15

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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.