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Finding the Fourth Proportional to 392,000.30, 588,000.45 and 303,526.70

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Solution

The fourth proportional to 392,000.30, 588,000.45 and 303,526.70 is: 455,290.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,000.30 : 588,000.45 = 303,526.70 : x
  2. Step 2: Convert to fraction form
    392,000.30/588,000.45 = 303,526.70/x
  3. Step 3: Cross multiply
    392,000.30x = 588,000.45 × 303,526.70
  4. Step 4: Simplify right side
    392,000.30x = 178,473,836,187.02
  5. Step 5: Solve for x
    x = 178,473,836,187.02/392,000.30
  6. Step 6: Final answer
    x = 455,290.05

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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.