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Finding the Fourth Proportional to 145,967.40, 218,951.10 and 143,999.10

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Solution

The fourth proportional to 145,967.40, 218,951.10 and 143,999.10 is: 215,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,967.40 : 218,951.10 = 143,999.10 : x
  2. Step 2: Convert to fraction form
    145,967.40/218,951.10 = 143,999.10/x
  3. Step 3: Cross multiply
    145,967.40x = 218,951.10 × 143,999.10
  4. Step 4: Simplify right side
    145,967.40x = 31,528,761,344.01
  5. Step 5: Solve for x
    x = 31,528,761,344.01/145,967.40
  6. Step 6: Final answer
    x = 215,998.65

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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.