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Finding the Fourth Proportional to 309,656.87, 427,244.85 and 178,802.28

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Solution

The fourth proportional to 309,656.87, 427,244.85 and 178,802.28 is: 246,700.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,656.87 : 427,244.85 = 178,802.28 : x
  2. Step 2: Convert to fraction form
    309,656.87/427,244.85 = 178,802.28/x
  3. Step 3: Cross multiply
    309,656.87x = 427,244.85 × 178,802.28
  4. Step 4: Simplify right side
    309,656.87x = 76,392,353,298.26
  5. Step 5: Solve for x
    x = 76,392,353,298.26/309,656.87
  6. Step 6: Final answer
    x = 246,700.02

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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.