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Finding the Fourth Proportional to 407,365.80, 611,121.60 and 170,732.40

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Solution

The fourth proportional to 407,365.80, 611,121.60 and 170,732.40 is: 256,129.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,365.80 : 611,121.60 = 170,732.40 : x
  2. Step 2: Convert to fraction form
    407,365.80/611,121.60 = 170,732.40/x
  3. Step 3: Cross multiply
    407,365.80x = 611,121.60 × 170,732.40
  4. Step 4: Simplify right side
    407,365.80x = 104,338,257,459.84
  5. Step 5: Solve for x
    x = 104,338,257,459.84/407,365.80
  6. Step 6: Final answer
    x = 256,129.15

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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.