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Finding the Fourth Proportional to 570,873.66, 856,430.73 and 215,879.82

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Solution

The fourth proportional to 570,873.66, 856,430.73 and 215,879.82 is: 323,865.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,873.66 : 856,430.73 = 215,879.82 : x
  2. Step 2: Convert to fraction form
    570,873.66/856,430.73 = 215,879.82/x
  3. Step 3: Cross multiply
    570,873.66x = 856,430.73 × 215,879.82
  4. Step 4: Simplify right side
    570,873.66x = 184,886,111,834.87
  5. Step 5: Solve for x
    x = 184,886,111,834.87/570,873.66
  6. Step 6: Final answer
    x = 323,865.20

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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.