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Finding the Fourth Proportional to 207,312.30, 310,591.18 and 143,998.64

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Solution

The fourth proportional to 207,312.30, 310,591.18 and 143,998.64 is: 215,735.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,312.30 : 310,591.18 = 143,998.64 : x
  2. Step 2: Convert to fraction form
    207,312.30/310,591.18 = 143,998.64/x
  3. Step 3: Cross multiply
    207,312.30x = 310,591.18 × 143,998.64
  4. Step 4: Simplify right side
    207,312.30x = 44,724,707,516.00
  5. Step 5: Solve for x
    x = 44,724,707,516.00/207,312.30
  6. Step 6: Final answer
    x = 215,735.91

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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.