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Finding the Fourth Proportional to 383,490.72, 529,256.61 and 230,578.74

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Solution

The fourth proportional to 383,490.72, 529,256.61 and 230,578.74 is: 318,222.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,490.72 : 529,256.61 = 230,578.74 : x
  2. Step 2: Convert to fraction form
    383,490.72/529,256.61 = 230,578.74/x
  3. Step 3: Cross multiply
    383,490.72x = 529,256.61 × 230,578.74
  4. Step 4: Simplify right side
    383,490.72x = 122,035,322,270.47
  5. Step 5: Solve for x
    x = 122,035,322,270.47/383,490.72
  6. Step 6: Final answer
    x = 318,222.36

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.