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Finding the Fourth Proportional to 421,090.80, 581,106.76 and 230,104.20

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Solution

The fourth proportional to 421,090.80, 581,106.76 and 230,104.20 is: 317,544.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,090.80 : 581,106.76 = 230,104.20 : x
  2. Step 2: Convert to fraction form
    421,090.80/581,106.76 = 230,104.20/x
  3. Step 3: Cross multiply
    421,090.80x = 581,106.76 × 230,104.20
  4. Step 4: Simplify right side
    421,090.80x = 133,715,106,124.39
  5. Step 5: Solve for x
    x = 133,715,106,124.39/421,090.80
  6. Step 6: Final answer
    x = 317,544.59

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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.