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Finding the Fourth Proportional to 421,637.34, 581,891.10 and 240,353.58

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Solution

The fourth proportional to 421,637.34, 581,891.10 and 240,353.58 is: 331,705.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,637.34 : 581,891.10 = 240,353.58 : x
  2. Step 2: Convert to fraction form
    421,637.34/581,891.10 = 240,353.58/x
  3. Step 3: Cross multiply
    421,637.34x = 581,891.10 × 240,353.58
  4. Step 4: Simplify right side
    421,637.34x = 139,859,609,055.14
  5. Step 5: Solve for x
    x = 139,859,609,055.14/421,637.34
  6. Step 6: Final answer
    x = 331,705.94

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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.