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Finding the Fourth Proportional to 383,106.72, 528,678.72 and 213,356.64

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Solution

The fourth proportional to 383,106.72, 528,678.72 and 213,356.64 is: 294,427.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,106.72 : 528,678.72 = 213,356.64 : x
  2. Step 2: Convert to fraction form
    383,106.72/528,678.72 = 213,356.64/x
  3. Step 3: Cross multiply
    383,106.72x = 528,678.72 × 213,356.64
  4. Step 4: Simplify right side
    383,106.72x = 112,797,115,338.70
  5. Step 5: Solve for x
    x = 112,797,115,338.70/383,106.72
  6. Step 6: Final answer
    x = 294,427.40

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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.