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Finding the Fourth Proportional to 309,362.92, 426,956.16 and 173,433.52

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Solution

The fourth proportional to 309,362.92, 426,956.16 and 173,433.52 is: 239,358.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,362.92 : 426,956.16 = 173,433.52 : x
  2. Step 2: Convert to fraction form
    309,362.92/426,956.16 = 173,433.52/x
  3. Step 3: Cross multiply
    309,362.92x = 426,956.16 × 173,433.52
  4. Step 4: Simplify right side
    309,362.92x = 74,048,509,714.48
  5. Step 5: Solve for x
    x = 74,048,509,714.48/309,362.92
  6. Step 6: Final answer
    x = 239,358.06

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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.