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Finding the Fourth Proportional to 385,551.40, 578,298.30 and 160,853.80

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Solution

The fourth proportional to 385,551.40, 578,298.30 and 160,853.80 is: 241,268.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,551.40 : 578,298.30 = 160,853.80 : x
  2. Step 2: Convert to fraction form
    385,551.40/578,298.30 = 160,853.80/x
  3. Step 3: Cross multiply
    385,551.40x = 578,298.30 × 160,853.80
  4. Step 4: Simplify right side
    385,551.40x = 93,021,479,088.54
  5. Step 5: Solve for x
    x = 93,021,479,088.54/385,551.40
  6. Step 6: Final answer
    x = 241,268.68

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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.