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Finding the Fourth Proportional to 421,475.82, 581,636.60 and 230,489.34

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Solution

The fourth proportional to 421,475.82, 581,636.60 and 230,489.34 is: 318,075.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,475.82 : 581,636.60 = 230,489.34 : x
  2. Step 2: Convert to fraction form
    421,475.82/581,636.60 = 230,489.34/x
  3. Step 3: Cross multiply
    421,475.82x = 581,636.60 × 230,489.34
  4. Step 4: Simplify right side
    421,475.82x = 134,061,036,053.84
  5. Step 5: Solve for x
    x = 134,061,036,053.84/421,475.82
  6. Step 6: Final answer
    x = 318,075.27

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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.