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Finding the Fourth Proportional to 407,563.60, 611,345.40 and 141,235.60

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Solution

The fourth proportional to 407,563.60, 611,345.40 and 141,235.60 is: 211,853.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,563.60 : 611,345.40 = 141,235.60 : x
  2. Step 2: Convert to fraction form
    407,563.60/611,345.40 = 141,235.60/x
  3. Step 3: Cross multiply
    407,563.60x = 611,345.40 × 141,235.60
  4. Step 4: Simplify right side
    407,563.60x = 86,343,734,376.24
  5. Step 5: Solve for x
    x = 86,343,734,376.24/407,563.60
  6. Step 6: Final answer
    x = 211,853.40

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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.