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Finding the Fourth Proportional to 145,819.60, 218,729.40 and 47,323.60

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Solution

The fourth proportional to 145,819.60, 218,729.40 and 47,323.60 is: 70,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,819.60 : 218,729.40 = 47,323.60 : x
  2. Step 2: Convert to fraction form
    145,819.60/218,729.40 = 47,323.60/x
  3. Step 3: Cross multiply
    145,819.60x = 218,729.40 × 47,323.60
  4. Step 4: Simplify right side
    145,819.60x = 10,351,062,633.84
  5. Step 5: Solve for x
    x = 10,351,062,633.84/145,819.60
  6. Step 6: Final answer
    x = 70,985.40

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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.