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Finding the Fourth Proportional to 210,825.61, 316,269.67 and 61,047.20

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Solution

The fourth proportional to 210,825.61, 316,269.67 and 61,047.20 is: 91,579.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,825.61 : 316,269.67 = 61,047.20 : x
  2. Step 2: Convert to fraction form
    210,825.61/316,269.67 = 61,047.20/x
  3. Step 3: Cross multiply
    210,825.61x = 316,269.67 × 61,047.20
  4. Step 4: Simplify right side
    210,825.61x = 19,307,378,436.48
  5. Step 5: Solve for x
    x = 19,307,378,436.48/210,825.61
  6. Step 6: Final answer
    x = 91,579.85

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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.