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Finding the Fourth Proportional to 398,720.58, 597,109.32 and 263,702.40

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Solution

The fourth proportional to 398,720.58, 597,109.32 and 263,702.40 is: 394,911.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,720.58 : 597,109.32 = 263,702.40 : x
  2. Step 2: Convert to fraction form
    398,720.58/597,109.32 = 263,702.40/x
  3. Step 3: Cross multiply
    398,720.58x = 597,109.32 × 263,702.40
  4. Step 4: Simplify right side
    398,720.58x = 157,459,160,746.37
  5. Step 5: Solve for x
    x = 157,459,160,746.37/398,720.58
  6. Step 6: Final answer
    x = 394,911.04

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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.