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Finding the Fourth Proportional to 570,872.16, 856,428.48 and 215,878.32

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Solution

The fourth proportional to 570,872.16, 856,428.48 and 215,878.32 is: 323,862.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,872.16 : 856,428.48 = 215,878.32 : x
  2. Step 2: Convert to fraction form
    570,872.16/856,428.48 = 215,878.32/x
  3. Step 3: Cross multiply
    570,872.16x = 856,428.48 × 215,878.32
  4. Step 4: Simplify right side
    570,872.16x = 184,884,341,462.55
  5. Step 5: Solve for x
    x = 184,884,341,462.55/570,872.16
  6. Step 6: Final answer
    x = 323,862.95

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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.