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Finding the Fourth Proportional to 250,056.72, 374,709 and 100,148.40

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Solution

The fourth proportional to 250,056.72, 374,709 and 100,148.40 is: 150,071.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    250,056.72 : 374,709 = 100,148.40 : x
  2. Step 2: Convert to fraction form
    250,056.72/374,709 = 100,148.40/x
  3. Step 3: Cross multiply
    250,056.72x = 374,709 × 100,148.40
  4. Step 4: Simplify right side
    250,056.72x = 37,526,506,815.60
  5. Step 5: Solve for x
    x = 37,526,506,815.60/250,056.72
  6. Step 6: Final answer
    x = 150,071.98

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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.