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Finding the Fourth Proportional to 440,363.68, 607,506.96 and 261,412

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Solution

The fourth proportional to 440,363.68, 607,506.96 and 261,412 is: 360,632.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,363.68 : 607,506.96 = 261,412 : x
  2. Step 2: Convert to fraction form
    440,363.68/607,506.96 = 261,412/x
  3. Step 3: Cross multiply
    440,363.68x = 607,506.96 × 261,412
  4. Step 4: Simplify right side
    440,363.68x = 158,809,609,427.52
  5. Step 5: Solve for x
    x = 158,809,609,427.52/440,363.68
  6. Step 6: Final answer
    x = 360,632.85

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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.