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Finding the Fourth Proportional to 325,640.70, 488,547.45 and 115,256.70

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Solution

The fourth proportional to 325,640.70, 488,547.45 and 115,256.70 is: 172,915.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,640.70 : 488,547.45 = 115,256.70 : x
  2. Step 2: Convert to fraction form
    325,640.70/488,547.45 = 115,256.70/x
  3. Step 3: Cross multiply
    325,640.70x = 488,547.45 × 115,256.70
  4. Step 4: Simplify right side
    325,640.70x = 56,308,366,880.42
  5. Step 5: Solve for x
    x = 56,308,366,880.42/325,640.70
  6. Step 6: Final answer
    x = 172,915.63

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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.