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Finding the Fourth Proportional to 421,633.38, 581,853.87 and 230,646.72

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Solution

The fourth proportional to 421,633.38, 581,853.87 and 230,646.72 is: 318,292.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,633.38 : 581,853.87 = 230,646.72 : x
  2. Step 2: Convert to fraction form
    421,633.38/581,853.87 = 230,646.72/x
  3. Step 3: Cross multiply
    421,633.38x = 581,853.87 × 230,646.72
  4. Step 4: Simplify right side
    421,633.38x = 134,202,686,634.81
  5. Step 5: Solve for x
    x = 134,202,686,634.81/421,633.38
  6. Step 6: Final answer
    x = 318,292.37

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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.