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Finding the Fourth Proportional to 207,360.40, 310,810.20 and 89,011.60

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Solution

The fourth proportional to 207,360.40, 310,810.20 and 89,011.60 is: 133,418.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,360.40 : 310,810.20 = 89,011.60 : x
  2. Step 2: Convert to fraction form
    207,360.40/310,810.20 = 89,011.60/x
  3. Step 3: Cross multiply
    207,360.40x = 310,810.20 × 89,011.60
  4. Step 4: Simplify right side
    207,360.40x = 27,665,713,198.32
  5. Step 5: Solve for x
    x = 27,665,713,198.32/207,360.40
  6. Step 6: Final answer
    x = 133,418.50

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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.