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Finding the Fourth Proportional to 363,985.60, 545,978.40 and 127,303.60

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Solution

The fourth proportional to 363,985.60, 545,978.40 and 127,303.60 is: 190,955.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,985.60 : 545,978.40 = 127,303.60 : x
  2. Step 2: Convert to fraction form
    363,985.60/545,978.40 = 127,303.60/x
  3. Step 3: Cross multiply
    363,985.60x = 545,978.40 × 127,303.60
  4. Step 4: Simplify right side
    363,985.60x = 69,505,015,842.24
  5. Step 5: Solve for x
    x = 69,505,015,842.24/363,985.60
  6. Step 6: Final answer
    x = 190,955.40

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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.