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Finding the Fourth Proportional to 385,870.97, 578,806.70 and 161,108.93

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Solution

The fourth proportional to 385,870.97, 578,806.70 and 161,108.93 is: 241,663.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,870.97 : 578,806.70 = 161,108.93 : x
  2. Step 2: Convert to fraction form
    385,870.97/578,806.70 = 161,108.93/x
  3. Step 3: Cross multiply
    385,870.97x = 578,806.70 × 161,108.93
  4. Step 4: Simplify right side
    385,870.97x = 93,250,928,755.30
  5. Step 5: Solve for x
    x = 93,250,928,755.30/385,870.97
  6. Step 6: Final answer
    x = 241,663.50

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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.