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Finding the Fourth Proportional to 315,641.08, 435,577.64 and 172,401.64

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Solution

The fourth proportional to 315,641.08, 435,577.64 and 172,401.64 is: 237,910.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,641.08 : 435,577.64 = 172,401.64 : x
  2. Step 2: Convert to fraction form
    315,641.08/435,577.64 = 172,401.64/x
  3. Step 3: Cross multiply
    315,641.08x = 435,577.64 × 172,401.64
  4. Step 4: Simplify right side
    315,641.08x = 75,094,299,483.33
  5. Step 5: Solve for x
    x = 75,094,299,483.33/315,641.08
  6. Step 6: Final answer
    x = 237,910.41

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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.