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Finding the Fourth Proportional to 456,813.23, 630,394.63 and 252,859.78

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Solution

The fourth proportional to 456,813.23, 630,394.63 and 252,859.78 is: 348,942.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,813.23 : 630,394.63 = 252,859.78 : x
  2. Step 2: Convert to fraction form
    456,813.23/630,394.63 = 252,859.78/x
  3. Step 3: Cross multiply
    456,813.23x = 630,394.63 × 252,859.78
  4. Step 4: Simplify right side
    456,813.23x = 159,401,447,454.98
  5. Step 5: Solve for x
    x = 159,401,447,454.98/456,813.23
  6. Step 6: Final answer
    x = 348,942.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.