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Finding the Fourth Proportional to 233,478.70, 350,218.05 and 139,000.30

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Solution

The fourth proportional to 233,478.70, 350,218.05 and 139,000.30 is: 208,500.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    233,478.70 : 350,218.05 = 139,000.30 : x
  2. Step 2: Convert to fraction form
    233,478.70/350,218.05 = 139,000.30/x
  3. Step 3: Cross multiply
    233,478.70x = 350,218.05 × 139,000.30
  4. Step 4: Simplify right side
    233,478.70x = 48,680,414,015.42
  5. Step 5: Solve for x
    x = 48,680,414,015.42/233,478.70
  6. Step 6: Final answer
    x = 208,500.45

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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.