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Finding the Fourth Proportional to 306,636.30, 423,157.47 and 172,500.30

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Solution

The fourth proportional to 306,636.30, 423,157.47 and 172,500.30 is: 238,050.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    306,636.30 : 423,157.47 = 172,500.30 : x
  2. Step 2: Convert to fraction form
    306,636.30/423,157.47 = 172,500.30/x
  3. Step 3: Cross multiply
    306,636.30x = 423,157.47 × 172,500.30
  4. Step 4: Simplify right side
    306,636.30x = 72,994,790,522.24
  5. Step 5: Solve for x
    x = 72,994,790,522.24/306,636.30
  6. Step 6: Final answer
    x = 238,050.06

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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.