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Finding the Fourth Proportional to 303,485.40, 454,681.35 and 145,365.30

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Solution

The fourth proportional to 303,485.40, 454,681.35 and 145,365.30 is: 217,786.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,485.40 : 454,681.35 = 145,365.30 : x
  2. Step 2: Convert to fraction form
    303,485.40/454,681.35 = 145,365.30/x
  3. Step 3: Cross multiply
    303,485.40x = 454,681.35 × 145,365.30
  4. Step 4: Simplify right side
    303,485.40x = 66,094,890,847.16
  5. Step 5: Solve for x
    x = 66,094,890,847.16/303,485.40
  6. Step 6: Final answer
    x = 217,786.06

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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.