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Finding the Fourth Proportional to 342,608.70, 512,455.05 and 307,325.10

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Solution

The fourth proportional to 342,608.70, 512,455.05 and 307,325.10 is: 459,679.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    342,608.70 : 512,455.05 = 307,325.10 : x
  2. Step 2: Convert to fraction form
    342,608.70/512,455.05 = 307,325.10/x
  3. Step 3: Cross multiply
    342,608.70x = 512,455.05 × 307,325.10
  4. Step 4: Simplify right side
    342,608.70x = 157,490,299,486.76
  5. Step 5: Solve for x
    x = 157,490,299,486.76/342,608.70
  6. Step 6: Final answer
    x = 459,679.80

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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.