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Finding the Fourth Proportional to 479,276.20, 661,401.20 and 264,416.76

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Solution

The fourth proportional to 479,276.20, 661,401.20 and 264,416.76 is: 364,895.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    479,276.20 : 661,401.20 = 264,416.76 : x
  2. Step 2: Convert to fraction form
    479,276.20/661,401.20 = 264,416.76/x
  3. Step 3: Cross multiply
    479,276.20x = 661,401.20 × 264,416.76
  4. Step 4: Simplify right side
    479,276.20x = 174,885,562,364.11
  5. Step 5: Solve for x
    x = 174,885,562,364.11/479,276.20
  6. Step 6: Final answer
    x = 364,895.15

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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.