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Finding the Fourth Proportional to 330,588.48, 456,431.80 and 253,971.12

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Solution

The fourth proportional to 330,588.48, 456,431.80 and 253,971.12 is: 350,648.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    330,588.48 : 456,431.80 = 253,971.12 : x
  2. Step 2: Convert to fraction form
    330,588.48/456,431.80 = 253,971.12/x
  3. Step 3: Cross multiply
    330,588.48x = 456,431.80 × 253,971.12
  4. Step 4: Simplify right side
    330,588.48x = 115,920,495,449.62
  5. Step 5: Solve for x
    x = 115,920,495,449.62/330,588.48
  6. Step 6: Final answer
    x = 350,648.93

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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.