Home / 421,941.60-632,915.04-172,623.60

Finding the Fourth Proportional to 421,941.60, 632,915.04 and 172,623.60

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Solution

The fourth proportional to 421,941.60, 632,915.04 and 172,623.60 is: 258,936.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,941.60 : 632,915.04 = 172,623.60 : x
  2. Step 2: Convert to fraction form
    421,941.60/632,915.04 = 172,623.60/x
  3. Step 3: Cross multiply
    421,941.60x = 632,915.04 × 172,623.60
  4. Step 4: Simplify right side
    421,941.60x = 109,256,072,698.94
  5. Step 5: Solve for x
    x = 109,256,072,698.94/421,941.60
  6. Step 6: Final answer
    x = 258,936.48

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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.