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Finding the Fourth Proportional to 210,258.96, 315,271.76 and 69,941.04

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Solution

The fourth proportional to 210,258.96, 315,271.76 and 69,941.04 is: 104,872.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,258.96 : 315,271.76 = 69,941.04 : x
  2. Step 2: Convert to fraction form
    210,258.96/315,271.76 = 69,941.04/x
  3. Step 3: Cross multiply
    210,258.96x = 315,271.76 × 69,941.04
  4. Step 4: Simplify right side
    210,258.96x = 22,050,434,777.03
  5. Step 5: Solve for x
    x = 22,050,434,777.03/210,258.96
  6. Step 6: Final answer
    x = 104,872.75

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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.