Home / 383,986.80-529,931.52-211,938.48

Finding the Fourth Proportional to 383,986.80, 529,931.52 and 211,938.48

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Solution

The fourth proportional to 383,986.80, 529,931.52 and 211,938.48 is: 292,491.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,986.80 : 529,931.52 = 211,938.48 : x
  2. Step 2: Convert to fraction form
    383,986.80/529,931.52 = 211,938.48/x
  3. Step 3: Cross multiply
    383,986.80x = 529,931.52 × 211,938.48
  4. Step 4: Simplify right side
    383,986.80x = 112,312,880,852.89
  5. Step 5: Solve for x
    x = 112,312,880,852.89/383,986.80
  6. Step 6: Final answer
    x = 292,491.51

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.