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Finding the Fourth Proportional to 421,689.96, 581,945.94 and 230,698.92

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Solution

The fourth proportional to 421,689.96, 581,945.94 and 230,698.92 is: 318,372.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,689.96 : 581,945.94 = 230,698.92 : x
  2. Step 2: Convert to fraction form
    421,689.96/581,945.94 = 230,698.92/x
  3. Step 3: Cross multiply
    421,689.96x = 581,945.94 × 230,698.92
  4. Step 4: Simplify right side
    421,689.96x = 134,254,299,856.39
  5. Step 5: Solve for x
    x = 134,254,299,856.39/421,689.96
  6. Step 6: Final answer
    x = 318,372.06

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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.