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Finding the Fourth Proportional to 570,726.06, 856,145.72 and 210,991.15

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Solution

The fourth proportional to 570,726.06, 856,145.72 and 210,991.15 is: 316,507.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    570,726.06 : 856,145.72 = 210,991.15 : x
  2. Step 2: Convert to fraction form
    570,726.06/856,145.72 = 210,991.15/x
  3. Step 3: Cross multiply
    570,726.06x = 856,145.72 × 210,991.15
  4. Step 4: Simplify right side
    570,726.06x = 180,639,170,030.38
  5. Step 5: Solve for x
    x = 180,639,170,030.38/570,726.06
  6. Step 6: Final answer
    x = 316,507.66

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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.