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Finding the Fourth Proportional to 439,490.76, 659,018.04 and 139,932.32

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Solution

The fourth proportional to 439,490.76, 659,018.04 and 139,932.32 is: 209,829.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,490.76 : 659,018.04 = 139,932.32 : x
  2. Step 2: Convert to fraction form
    439,490.76/659,018.04 = 139,932.32/x
  3. Step 3: Cross multiply
    439,490.76x = 659,018.04 × 139,932.32
  4. Step 4: Simplify right side
    439,490.76x = 92,217,919,963.96
  5. Step 5: Solve for x
    x = 92,217,919,963.96/439,490.76
  6. Step 6: Final answer
    x = 209,829.03

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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.