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Finding the Fourth Proportional to 143,284.20, 214,928.10 and 43,445.40

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Solution

The fourth proportional to 143,284.20, 214,928.10 and 43,445.40 is: 65,168.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,284.20 : 214,928.10 = 43,445.40 : x
  2. Step 2: Convert to fraction form
    143,284.20/214,928.10 = 43,445.40/x
  3. Step 3: Cross multiply
    143,284.20x = 214,928.10 × 43,445.40
  4. Step 4: Simplify right side
    143,284.20x = 9,337,637,275.74
  5. Step 5: Solve for x
    x = 9,337,637,275.74/143,284.20
  6. Step 6: Final answer
    x = 65,168.65

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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.