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Finding the Fourth Proportional to 345,049.72, 473,624.60 and 306,480.76

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Solution

The fourth proportional to 345,049.72, 473,624.60 and 306,480.76 is: 420,683.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,049.72 : 473,624.60 = 306,480.76 : x
  2. Step 2: Convert to fraction form
    345,049.72/473,624.60 = 306,480.76/x
  3. Step 3: Cross multiply
    345,049.72x = 473,624.60 × 306,480.76
  4. Step 4: Simplify right side
    345,049.72x = 145,156,827,362.70
  5. Step 5: Solve for x
    x = 145,156,827,362.70/345,049.72
  6. Step 6: Final answer
    x = 420,683.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.