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Finding the Fourth Proportional to 290,471.34, 436,080.15 and 223,953.72

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Solution

The fourth proportional to 290,471.34, 436,080.15 and 223,953.72 is: 336,218.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,471.34 : 436,080.15 = 223,953.72 : x
  2. Step 2: Convert to fraction form
    290,471.34/436,080.15 = 223,953.72/x
  3. Step 3: Cross multiply
    290,471.34x = 436,080.15 × 223,953.72
  4. Step 4: Simplify right side
    290,471.34x = 97,661,771,810.66
  5. Step 5: Solve for x
    x = 97,661,771,810.66/290,471.34
  6. Step 6: Final answer
    x = 336,218.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.