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Finding the Fourth Proportional to 364,038.40, 545,911.80 and 127,259.20

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Solution

The fourth proportional to 364,038.40, 545,911.80 and 127,259.20 is: 190,837.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    364,038.40 : 545,911.80 = 127,259.20 : x
  2. Step 2: Convert to fraction form
    364,038.40/545,911.80 = 127,259.20/x
  3. Step 3: Cross multiply
    364,038.40x = 545,911.80 × 127,259.20
  4. Step 4: Simplify right side
    364,038.40x = 69,472,298,938.56
  5. Step 5: Solve for x
    x = 69,472,298,938.56/364,038.40
  6. Step 6: Final answer
    x = 190,837.83

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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.