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Finding the Fourth Proportional to 353,925.16, 530,362.76 and 259,971.64

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Solution

The fourth proportional to 353,925.16, 530,362.76 and 259,971.64 is: 389,571.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,925.16 : 530,362.76 = 259,971.64 : x
  2. Step 2: Convert to fraction form
    353,925.16/530,362.76 = 259,971.64/x
  3. Step 3: Cross multiply
    353,925.16x = 530,362.76 × 259,971.64
  4. Step 4: Simplify right side
    353,925.16x = 137,879,273,886.36
  5. Step 5: Solve for x
    x = 137,879,273,886.36/353,925.16
  6. Step 6: Final answer
    x = 389,571.84

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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.