Home / 306,906.03-423,549.68-172,778.67

Finding the Fourth Proportional to 306,906.03, 423,549.68 and 172,778.67

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Solution

The fourth proportional to 306,906.03, 423,549.68 and 172,778.67 is: 238,445.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,906.03 : 423,549.68 = 172,778.67 : x
  2. Step 2: Convert to fraction form
    306,906.03/423,549.68 = 172,778.67/x
  3. Step 3: Cross multiply
    306,906.03x = 423,549.68 × 172,778.67
  4. Step 4: Simplify right side
    306,906.03x = 73,180,349,525.43
  5. Step 5: Solve for x
    x = 73,180,349,525.43/306,906.03
  6. Step 6: Final answer
    x = 238,445.46

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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.