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Finding the Fourth Proportional to 407,008.60, 610,080.90 and 196,509.40

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Solution

The fourth proportional to 407,008.60, 610,080.90 and 196,509.40 is: 294,555.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,008.60 : 610,080.90 = 196,509.40 : x
  2. Step 2: Convert to fraction form
    407,008.60/610,080.90 = 196,509.40/x
  3. Step 3: Cross multiply
    407,008.60x = 610,080.90 × 196,509.40
  4. Step 4: Simplify right side
    407,008.60x = 119,886,631,610.46
  5. Step 5: Solve for x
    x = 119,886,631,610.46/407,008.60
  6. Step 6: Final answer
    x = 294,555.52

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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.