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Finding the Fourth Proportional to 426,736.58, 640,200.21 and 160,499.40

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Solution

The fourth proportional to 426,736.58, 640,200.21 and 160,499.40 is: 240,784.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,736.58 : 640,200.21 = 160,499.40 : x
  2. Step 2: Convert to fraction form
    426,736.58/640,200.21 = 160,499.40/x
  3. Step 3: Cross multiply
    426,736.58x = 640,200.21 × 160,499.40
  4. Step 4: Simplify right side
    426,736.58x = 102,751,748,382.81
  5. Step 5: Solve for x
    x = 102,751,748,382.81/426,736.58
  6. Step 6: Final answer
    x = 240,784.96

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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.