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Finding the Fourth Proportional to 219,745.60, 329,618.40 and 148,886.80

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Solution

The fourth proportional to 219,745.60, 329,618.40 and 148,886.80 is: 223,330.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,745.60 : 329,618.40 = 148,886.80 : x
  2. Step 2: Convert to fraction form
    219,745.60/329,618.40 = 148,886.80/x
  3. Step 3: Cross multiply
    219,745.60x = 329,618.40 × 148,886.80
  4. Step 4: Simplify right side
    219,745.60x = 49,075,828,797.12
  5. Step 5: Solve for x
    x = 49,075,828,797.12/219,745.60
  6. Step 6: Final answer
    x = 223,330.20

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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.