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Finding the Fourth Proportional to 570,162.61, 855,439.53 and 215,278.12

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Solution

The fourth proportional to 570,162.61, 855,439.53 and 215,278.12 is: 322,991.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,162.61 : 855,439.53 = 215,278.12 : x
  2. Step 2: Convert to fraction form
    570,162.61/855,439.53 = 215,278.12/x
  3. Step 3: Cross multiply
    570,162.61x = 855,439.53 × 215,278.12
  4. Step 4: Simplify right side
    570,162.61x = 184,157,413,792.08
  5. Step 5: Solve for x
    x = 184,157,413,792.08/570,162.61
  6. Step 6: Final answer
    x = 322,991.04

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.