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Finding the Fourth Proportional to 288,903.72, 433,409.82 and 131,143.26

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Solution

The fourth proportional to 288,903.72, 433,409.82 and 131,143.26 is: 196,739.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,903.72 : 433,409.82 = 131,143.26 : x
  2. Step 2: Convert to fraction form
    288,903.72/433,409.82 = 131,143.26/x
  3. Step 3: Cross multiply
    288,903.72x = 433,409.82 × 131,143.26
  4. Step 4: Simplify right side
    288,903.72x = 56,838,776,710.81
  5. Step 5: Solve for x
    x = 56,838,776,710.81/288,903.72
  6. Step 6: Final answer
    x = 196,739.51

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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.