Home / 296,869.76-445,138.08-128,284.80

Finding the Fourth Proportional to 296,869.76, 445,138.08 and 128,284.80

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Solution

The fourth proportional to 296,869.76, 445,138.08 and 128,284.80 is: 192,355.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    296,869.76 : 445,138.08 = 128,284.80 : x
  2. Step 2: Convert to fraction form
    296,869.76/445,138.08 = 128,284.80/x
  3. Step 3: Cross multiply
    296,869.76x = 445,138.08 × 128,284.80
  4. Step 4: Simplify right side
    296,869.76x = 57,104,449,565.18
  5. Step 5: Solve for x
    x = 57,104,449,565.18/296,869.76
  6. Step 6: Final answer
    x = 192,355.23

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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.