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Finding the Fourth Proportional to 145,728.30, 218,592.45 and 47,232.30

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Solution

The fourth proportional to 145,728.30, 218,592.45 and 47,232.30 is: 70,848.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    145,728.30 : 218,592.45 = 47,232.30 : x
  2. Step 2: Convert to fraction form
    145,728.30/218,592.45 = 47,232.30/x
  3. Step 3: Cross multiply
    145,728.30x = 218,592.45 × 47,232.30
  4. Step 4: Simplify right side
    145,728.30x = 10,324,624,176.14
  5. Step 5: Solve for x
    x = 10,324,624,176.14/145,728.30
  6. Step 6: Final answer
    x = 70,848.45

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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.