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Finding the Fourth Proportional to 407,599.80, 611,399.70 and 141,332.55

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Solution

The fourth proportional to 407,599.80, 611,399.70 and 141,332.55 is: 211,998.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,599.80 : 611,399.70 = 141,332.55 : x
  2. Step 2: Convert to fraction form
    407,599.80/611,399.70 = 141,332.55/x
  3. Step 3: Cross multiply
    407,599.80x = 611,399.70 × 141,332.55
  4. Step 4: Simplify right side
    407,599.80x = 86,410,678,670.24
  5. Step 5: Solve for x
    x = 86,410,678,670.24/407,599.80
  6. Step 6: Final answer
    x = 211,998.83

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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.