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Finding the Fourth Proportional to 145,301.20, 217,984.20 and 113,808.40

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Solution

The fourth proportional to 145,301.20, 217,984.20 and 113,808.40 is: 170,737.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,301.20 : 217,984.20 = 113,808.40 : x
  2. Step 2: Convert to fraction form
    145,301.20/217,984.20 = 113,808.40/x
  3. Step 3: Cross multiply
    145,301.20x = 217,984.20 × 113,808.40
  4. Step 4: Simplify right side
    145,301.20x = 24,808,433,027.28
  5. Step 5: Solve for x
    x = 24,808,433,027.28/145,301.20
  6. Step 6: Final answer
    x = 170,737.98

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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.