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Finding the Fourth Proportional to 570,938.40, 856,148.40 and 215,834.40

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Solution

The fourth proportional to 570,938.40, 856,148.40 and 215,834.40 is: 323,653.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,938.40 : 856,148.40 = 215,834.40 : x
  2. Step 2: Convert to fraction form
    570,938.40/856,148.40 = 215,834.40/x
  3. Step 3: Cross multiply
    570,938.40x = 856,148.40 × 215,834.40
  4. Step 4: Simplify right side
    570,938.40x = 184,786,276,224.96
  5. Step 5: Solve for x
    x = 184,786,276,224.96/570,938.40
  6. Step 6: Final answer
    x = 323,653.61

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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.