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Finding the Fourth Proportional to 219,292.95, 328,903.37 and 77,104.81

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Solution

The fourth proportional to 219,292.95, 328,903.37 and 77,104.81 is: 115,644.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,292.95 : 328,903.37 = 77,104.81 : x
  2. Step 2: Convert to fraction form
    219,292.95/328,903.37 = 77,104.81/x
  3. Step 3: Cross multiply
    219,292.95x = 328,903.37 × 77,104.81
  4. Step 4: Simplify right side
    219,292.95x = 25,360,030,750.59
  5. Step 5: Solve for x
    x = 25,360,030,750.59/219,292.95
  6. Step 6: Final answer
    x = 115,644.53

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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.