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Finding the Fourth Proportional to 330,668.40, 456,509.52 and 252,997.68

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Solution

The fourth proportional to 330,668.40, 456,509.52 and 252,997.68 is: 349,279.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,668.40 : 456,509.52 = 252,997.68 : x
  2. Step 2: Convert to fraction form
    330,668.40/456,509.52 = 252,997.68/x
  3. Step 3: Cross multiply
    330,668.40x = 456,509.52 × 252,997.68
  4. Step 4: Simplify right side
    330,668.40x = 115,495,849,457.91
  5. Step 5: Solve for x
    x = 115,495,849,457.91/330,668.40
  6. Step 6: Final answer
    x = 349,279.97

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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.