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Finding the Fourth Proportional to 385,811.60, 578,808.57 and 161,047.13

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Solution

The fourth proportional to 385,811.60, 578,808.57 and 161,047.13 is: 241,608.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,811.60 : 578,808.57 = 161,047.13 : x
  2. Step 2: Convert to fraction form
    385,811.60/578,808.57 = 161,047.13/x
  3. Step 3: Cross multiply
    385,811.60x = 578,808.57 × 161,047.13
  4. Step 4: Simplify right side
    385,811.60x = 93,215,459,017.90
  5. Step 5: Solve for x
    x = 93,215,459,017.90/385,811.60
  6. Step 6: Final answer
    x = 241,608.75

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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.