Home / 315,340.30-435,170.82-172,103.50

Finding the Fourth Proportional to 315,340.30, 435,170.82 and 172,103.50

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Solution

The fourth proportional to 315,340.30, 435,170.82 and 172,103.50 is: 237,503.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,340.30 : 435,170.82 = 172,103.50 : x
  2. Step 2: Convert to fraction form
    315,340.30/435,170.82 = 172,103.50/x
  3. Step 3: Cross multiply
    315,340.30x = 435,170.82 × 172,103.50
  4. Step 4: Simplify right side
    315,340.30x = 74,894,421,219.87
  5. Step 5: Solve for x
    x = 74,894,421,219.87/315,340.30
  6. Step 6: Final answer
    x = 237,503.49

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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.