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Finding the Fourth Proportional to 307,638.20, 460,679.70 and 245,430.20

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Solution

The fourth proportional to 307,638.20, 460,679.70 and 245,430.20 is: 367,524.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    307,638.20 : 460,679.70 = 245,430.20 : x
  2. Step 2: Convert to fraction form
    307,638.20/460,679.70 = 245,430.20/x
  3. Step 3: Cross multiply
    307,638.20x = 460,679.70 × 245,430.20
  4. Step 4: Simplify right side
    307,638.20x = 113,064,710,906.94
  5. Step 5: Solve for x
    x = 113,064,710,906.94/307,638.20
  6. Step 6: Final answer
    x = 367,524.94

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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.