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Finding the Fourth Proportional to 210,900.38, 315,953.16 and 104,159.40

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Solution

The fourth proportional to 210,900.38, 315,953.16 and 104,159.40 is: 156,042.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,900.38 : 315,953.16 = 104,159.40 : x
  2. Step 2: Convert to fraction form
    210,900.38/315,953.16 = 104,159.40/x
  3. Step 3: Cross multiply
    210,900.38x = 315,953.16 × 104,159.40
  4. Step 4: Simplify right side
    210,900.38x = 32,909,491,573.70
  5. Step 5: Solve for x
    x = 32,909,491,573.70/210,900.38
  6. Step 6: Final answer
    x = 156,042.83

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1.5x scale

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.