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Finding the Fourth Proportional to 210,635.64, 315,968.04 and 70,376.04

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Solution

The fourth proportional to 210,635.64, 315,968.04 and 70,376.04 is: 105,568.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,635.64 : 315,968.04 = 70,376.04 : x
  2. Step 2: Convert to fraction form
    210,635.64/315,968.04 = 70,376.04/x
  3. Step 3: Cross multiply
    210,635.64x = 315,968.04 × 70,376.04
  4. Step 4: Simplify right side
    210,635.64x = 22,236,579,421.76
  5. Step 5: Solve for x
    x = 22,236,579,421.76/210,635.64
  6. Step 6: Final answer
    x = 105,568.93

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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.