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Finding the Fourth Proportional to 364,079.55, 545,955.30 and 139,365.30

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Solution

The fourth proportional to 364,079.55, 545,955.30 and 139,365.30 is: 208,985.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,079.55 : 545,955.30 = 139,365.30 : x
  2. Step 2: Convert to fraction form
    364,079.55/545,955.30 = 139,365.30/x
  3. Step 3: Cross multiply
    364,079.55x = 545,955.30 × 139,365.30
  4. Step 4: Simplify right side
    364,079.55x = 76,087,224,171.09
  5. Step 5: Solve for x
    x = 76,087,224,171.09/364,079.55
  6. Step 6: Final answer
    x = 208,985.16

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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.