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Finding the Fourth Proportional to 570,718.31, 856,134.09 and 210,983.40

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Solution

The fourth proportional to 570,718.31, 856,134.09 and 210,983.40 is: 316,496.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,718.31 : 856,134.09 = 210,983.40 : x
  2. Step 2: Convert to fraction form
    570,718.31/856,134.09 = 210,983.40/x
  3. Step 3: Cross multiply
    570,718.31x = 856,134.09 × 210,983.40
  4. Step 4: Simplify right side
    570,718.31x = 180,630,081,164.11
  5. Step 5: Solve for x
    x = 180,630,081,164.11/570,718.31
  6. Step 6: Final answer
    x = 316,496.04

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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.