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Finding the Fourth Proportional to 387,957.25, 535,381.01 and 218,195.02

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Solution

The fourth proportional to 387,957.25, 535,381.01 and 218,195.02 is: 301,109.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    387,957.25 : 535,381.01 = 218,195.02 : x
  2. Step 2: Convert to fraction form
    387,957.25/535,381.01 = 218,195.02/x
  3. Step 3: Cross multiply
    387,957.25x = 535,381.01 × 218,195.02
  4. Step 4: Simplify right side
    387,957.25x = 116,817,470,184.57
  5. Step 5: Solve for x
    x = 116,817,470,184.57/387,957.25
  6. Step 6: Final answer
    x = 301,109.13

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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.