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Finding the Fourth Proportional to 385,531.20, 578,383.20 and 148,852.80

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Solution

The fourth proportional to 385,531.20, 578,383.20 and 148,852.80 is: 223,312.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,531.20 : 578,383.20 = 148,852.80 : x
  2. Step 2: Convert to fraction form
    385,531.20/578,383.20 = 148,852.80/x
  3. Step 3: Cross multiply
    385,531.20x = 578,383.20 × 148,852.80
  4. Step 4: Simplify right side
    385,531.20x = 86,093,958,792.96
  5. Step 5: Solve for x
    x = 86,093,958,792.96/385,531.20
  6. Step 6: Final answer
    x = 223,312.56

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.