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Finding the Fourth Proportional to 364,095.55, 545,979.30 and 139,381.30

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Solution

The fourth proportional to 364,095.55, 545,979.30 and 139,381.30 is: 209,009.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,095.55 : 545,979.30 = 139,381.30 : x
  2. Step 2: Convert to fraction form
    364,095.55/545,979.30 = 139,381.30/x
  3. Step 3: Cross multiply
    364,095.55x = 545,979.30 × 139,381.30
  4. Step 4: Simplify right side
    364,095.55x = 76,099,304,607.09
  5. Step 5: Solve for x
    x = 76,099,304,607.09/364,095.55
  6. Step 6: Final answer
    x = 209,009.16

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.