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Finding the Fourth Proportional to 145,861.60, 218,446.80 and 145,861.60

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Solution

The fourth proportional to 145,861.60, 218,446.80 and 145,861.60 is: 218,446.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,861.60 : 218,446.80 = 145,861.60 : x
  2. Step 2: Convert to fraction form
    145,861.60/218,446.80 = 145,861.60/x
  3. Step 3: Cross multiply
    145,861.60x = 218,446.80 × 145,861.60
  4. Step 4: Simplify right side
    145,861.60x = 31,862,999,762.88
  5. Step 5: Solve for x
    x = 31,862,999,762.88/145,861.60
  6. Step 6: Final answer
    x = 218,446.80

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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.