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Finding the Fourth Proportional to 210,584.32, 316,000.92 and 77,558.08

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Solution

The fourth proportional to 210,584.32, 316,000.92 and 77,558.08 is: 116,382.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,584.32 : 316,000.92 = 77,558.08 : x
  2. Step 2: Convert to fraction form
    210,584.32/316,000.92 = 77,558.08/x
  3. Step 3: Cross multiply
    210,584.32x = 316,000.92 × 77,558.08
  4. Step 4: Simplify right side
    210,584.32x = 24,508,424,633.43
  5. Step 5: Solve for x
    x = 24,508,424,633.43/210,584.32
  6. Step 6: Final answer
    x = 116,382.95

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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.