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Finding the Fourth Proportional to 315,967.32, 436,035.12 and 172,727.40

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Solution

The fourth proportional to 315,967.32, 436,035.12 and 172,727.40 is: 238,363.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,967.32 : 436,035.12 = 172,727.40 : x
  2. Step 2: Convert to fraction form
    315,967.32/436,035.12 = 172,727.40/x
  3. Step 3: Cross multiply
    315,967.32x = 436,035.12 × 172,727.40
  4. Step 4: Simplify right side
    315,967.32x = 75,315,212,586.29
  5. Step 5: Solve for x
    x = 75,315,212,586.29/315,967.32
  6. Step 6: Final answer
    x = 238,363.93

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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.