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Finding the Fourth Proportional to 385,546.40, 578,290.80 and 160,848.80

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Solution

The fourth proportional to 385,546.40, 578,290.80 and 160,848.80 is: 241,261.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,546.40 : 578,290.80 = 160,848.80 : x
  2. Step 2: Convert to fraction form
    385,546.40/578,290.80 = 160,848.80/x
  3. Step 3: Cross multiply
    385,546.40x = 578,290.80 × 160,848.80
  4. Step 4: Simplify right side
    385,546.40x = 93,017,381,231.04
  5. Step 5: Solve for x
    x = 93,017,381,231.04/385,546.40
  6. Step 6: Final answer
    x = 241,261.18

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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.