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Finding the Fourth Proportional to 209,927.59, 315,013.31 and 88,339.16

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Solution

The fourth proportional to 209,927.59, 315,013.31 and 88,339.16 is: 132,560.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,927.59 : 315,013.31 = 88,339.16 : x
  2. Step 2: Convert to fraction form
    209,927.59/315,013.31 = 88,339.16/x
  3. Step 3: Cross multiply
    209,927.59x = 315,013.31 × 88,339.16
  4. Step 4: Simplify right side
    209,927.59x = 27,828,009,840.00
  5. Step 5: Solve for x
    x = 27,828,009,840.00/209,927.59
  6. Step 6: Final answer
    x = 132,560.04

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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.