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Finding the Fourth Proportional to 353,718.02, 530,597.79 and 100,979.07

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Solution

The fourth proportional to 353,718.02, 530,597.79 and 100,979.07 is: 151,474.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,718.02 : 530,597.79 = 100,979.07 : x
  2. Step 2: Convert to fraction form
    353,718.02/530,597.79 = 100,979.07/x
  3. Step 3: Cross multiply
    353,718.02x = 530,597.79 × 100,979.07
  4. Step 4: Simplify right side
    353,718.02x = 53,579,271,378.26
  5. Step 5: Solve for x
    x = 53,579,271,378.26/353,718.02
  6. Step 6: Final answer
    x = 151,474.53

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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.