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Finding the Fourth Proportional to 421,237.89, 581,240.40 and 239,953.35

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Solution

The fourth proportional to 421,237.89, 581,240.40 and 239,953.35 is: 331,096.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,237.89 : 581,240.40 = 239,953.35 : x
  2. Step 2: Convert to fraction form
    421,237.89/581,240.40 = 239,953.35/x
  3. Step 3: Cross multiply
    421,237.89x = 581,240.40 × 239,953.35
  4. Step 4: Simplify right side
    421,237.89x = 139,470,581,135.34
  5. Step 5: Solve for x
    x = 139,470,581,135.34/421,237.89
  6. Step 6: Final answer
    x = 331,096.95

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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.