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Finding the Fourth Proportional to 145,728.40, 218,532.30 and 50,938.60

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Solution

The fourth proportional to 145,728.40, 218,532.30 and 50,938.60 is: 76,386.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,728.40 : 218,532.30 = 50,938.60 : x
  2. Step 2: Convert to fraction form
    145,728.40/218,532.30 = 50,938.60/x
  3. Step 3: Cross multiply
    145,728.40x = 218,532.30 × 50,938.60
  4. Step 4: Simplify right side
    145,728.40x = 11,131,729,416.78
  5. Step 5: Solve for x
    x = 11,131,729,416.78/145,728.40
  6. Step 6: Final answer
    x = 76,386.82

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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.