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Finding the Fourth Proportional to 407,252.40, 610,936.20 and 126,740.40

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Solution

The fourth proportional to 407,252.40, 610,936.20 and 126,740.40 is: 190,128.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,252.40 : 610,936.20 = 126,740.40 : x
  2. Step 2: Convert to fraction form
    407,252.40/610,936.20 = 126,740.40/x
  3. Step 3: Cross multiply
    407,252.40x = 610,936.20 × 126,740.40
  4. Step 4: Simplify right side
    407,252.40x = 77,430,298,362.48
  5. Step 5: Solve for x
    x = 77,430,298,362.48/407,252.40
  6. Step 6: Final answer
    x = 190,128.53

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1.5x scale

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.