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Finding the Fourth Proportional to 386,094.84, 579,158.50 and 105,611.64

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Solution

The fourth proportional to 386,094.84, 579,158.50 and 105,611.64 is: 158,421.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,094.84 : 579,158.50 = 105,611.64 : x
  2. Step 2: Convert to fraction form
    386,094.84/579,158.50 = 105,611.64/x
  3. Step 3: Cross multiply
    386,094.84x = 579,158.50 × 105,611.64
  4. Step 4: Simplify right side
    386,094.84x = 61,165,879,004.94
  5. Step 5: Solve for x
    x = 61,165,879,004.94/386,094.84
  6. Step 6: Final answer
    x = 158,421.90

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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.