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Finding the Fourth Proportional to 210,403.71, 315,605.43 and 52,632.05

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Solution

The fourth proportional to 210,403.71, 315,605.43 and 52,632.05 is: 78,948.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,403.71 : 315,605.43 = 52,632.05 : x
  2. Step 2: Convert to fraction form
    210,403.71/315,605.43 = 52,632.05/x
  3. Step 3: Cross multiply
    210,403.71x = 315,605.43 × 52,632.05
  4. Step 4: Simplify right side
    210,403.71x = 16,610,959,194.00
  5. Step 5: Solve for x
    x = 16,610,959,194.00/210,403.71
  6. Step 6: Final answer
    x = 78,948.03

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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.