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Finding the Fourth Proportional to 330,756.42, 456,630.87 and 253,085.64

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Solution

The fourth proportional to 330,756.42, 456,630.87 and 253,085.64 is: 349,401.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,756.42 : 456,630.87 = 253,085.64 : x
  2. Step 2: Convert to fraction form
    330,756.42/456,630.87 = 253,085.64/x
  3. Step 3: Cross multiply
    330,756.42x = 456,630.87 × 253,085.64
  4. Step 4: Simplify right side
    330,756.42x = 115,566,715,977.71
  5. Step 5: Solve for x
    x = 115,566,715,977.71/330,756.42
  6. Step 6: Final answer
    x = 349,401.28

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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.