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Finding the Fourth Proportional to 400,807.08, 601,239.78 and 134,565.35

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Solution

The fourth proportional to 400,807.08, 601,239.78 and 134,565.35 is: 201,857.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,807.08 : 601,239.78 = 134,565.35 : x
  2. Step 2: Convert to fraction form
    400,807.08/601,239.78 = 134,565.35/x
  3. Step 3: Cross multiply
    400,807.08x = 601,239.78 × 134,565.35
  4. Step 4: Simplify right side
    400,807.08x = 80,906,038,423.42
  5. Step 5: Solve for x
    x = 80,906,038,423.42/400,807.08
  6. Step 6: Final answer
    x = 201,857.81

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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.