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Finding the Fourth Proportional to 207,265.08, 310,795.38 and 87,300.12

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Solution

The fourth proportional to 207,265.08, 310,795.38 and 87,300.12 is: 130,907.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,265.08 : 310,795.38 = 87,300.12 : x
  2. Step 2: Convert to fraction form
    207,265.08/310,795.38 = 87,300.12/x
  3. Step 3: Cross multiply
    207,265.08x = 310,795.38 × 87,300.12
  4. Step 4: Simplify right side
    207,265.08x = 27,132,473,969.45
  5. Step 5: Solve for x
    x = 27,132,473,969.45/207,265.08
  6. Step 6: Final answer
    x = 130,907.12

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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.