Home / 208,548.12-312,790.50-68,303.64

Finding the Fourth Proportional to 208,548.12, 312,790.50 and 68,303.64

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Solution

The fourth proportional to 208,548.12, 312,790.50 and 68,303.64 is: 102,445.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,548.12 : 312,790.50 = 68,303.64 : x
  2. Step 2: Convert to fraction form
    208,548.12/312,790.50 = 68,303.64/x
  3. Step 3: Cross multiply
    208,548.12x = 312,790.50 × 68,303.64
  4. Step 4: Simplify right side
    208,548.12x = 21,364,729,707.42
  5. Step 5: Solve for x
    x = 21,364,729,707.42/208,548.12
  6. Step 6: Final answer
    x = 102,445.08

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1.5x scale

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.