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Finding the Fourth Proportional to 421,378.96, 581,502.90 and 230,392.30

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Solution

The fourth proportional to 421,378.96, 581,502.90 and 230,392.30 is: 317,941.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,378.96 : 581,502.90 = 230,392.30 : x
  2. Step 2: Convert to fraction form
    421,378.96/581,502.90 = 230,392.30/x
  3. Step 3: Cross multiply
    421,378.96x = 581,502.90 × 230,392.30
  4. Step 4: Simplify right side
    421,378.96x = 133,973,790,587.67
  5. Step 5: Solve for x
    x = 133,973,790,587.67/421,378.96
  6. Step 6: Final answer
    x = 317,941.34

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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.