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Finding the Fourth Proportional to 383,718.30, 575,577.45 and 217,830.30

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Solution

The fourth proportional to 383,718.30, 575,577.45 and 217,830.30 is: 326,745.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    383,718.30 : 575,577.45 = 217,830.30 : x
  2. Step 2: Convert to fraction form
    383,718.30/575,577.45 = 217,830.30/x
  3. Step 3: Cross multiply
    383,718.30x = 575,577.45 × 217,830.30
  4. Step 4: Simplify right side
    383,718.30x = 125,378,208,606.74
  5. Step 5: Solve for x
    x = 125,378,208,606.74/383,718.30
  6. Step 6: Final answer
    x = 326,745.45

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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.