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Finding the Fourth Proportional to 570,982.40, 856,214.40 and 215,878.40

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Solution

The fourth proportional to 570,982.40, 856,214.40 and 215,878.40 is: 323,719.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,982.40 : 856,214.40 = 215,878.40 : x
  2. Step 2: Convert to fraction form
    570,982.40/856,214.40 = 215,878.40/x
  3. Step 3: Cross multiply
    570,982.40x = 856,214.40 × 215,878.40
  4. Step 4: Simplify right side
    570,982.40x = 184,838,194,728.96
  5. Step 5: Solve for x
    x = 184,838,194,728.96/570,982.40
  6. Step 6: Final answer
    x = 323,719.60

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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.