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Finding the Fourth Proportional to 353,673.74, 530,528.20 and 100,991.72

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Solution

The fourth proportional to 353,673.74, 530,528.20 and 100,991.72 is: 151,492.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,673.74 : 530,528.20 = 100,991.72 : x
  2. Step 2: Convert to fraction form
    353,673.74/530,528.20 = 100,991.72/x
  3. Step 3: Cross multiply
    353,673.74x = 530,528.20 × 100,991.72
  4. Step 4: Simplify right side
    353,673.74x = 53,578,955,426.50
  5. Step 5: Solve for x
    x = 53,578,955,426.50/353,673.74
  6. Step 6: Final answer
    x = 151,492.60

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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.