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Finding the Fourth Proportional to 143,800.20, 215,681.40 and 43,970.40

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Solution

The fourth proportional to 143,800.20, 215,681.40 and 43,970.40 is: 65,949.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,800.20 : 215,681.40 = 43,970.40 : x
  2. Step 2: Convert to fraction form
    143,800.20/215,681.40 = 43,970.40/x
  3. Step 3: Cross multiply
    143,800.20x = 215,681.40 × 43,970.40
  4. Step 4: Simplify right side
    143,800.20x = 9,483,597,430.56
  5. Step 5: Solve for x
    x = 9,483,597,430.56/143,800.20
  6. Step 6: Final answer
    x = 65,949.82

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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.