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Finding the Fourth Proportional to 219,482.80, 329,027.10 and 86,453.80

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Solution

The fourth proportional to 219,482.80, 329,027.10 and 86,453.80 is: 129,603.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,482.80 : 329,027.10 = 86,453.80 : x
  2. Step 2: Convert to fraction form
    219,482.80/329,027.10 = 86,453.80/x
  3. Step 3: Cross multiply
    219,482.80x = 329,027.10 × 86,453.80
  4. Step 4: Simplify right side
    219,482.80x = 28,445,643,097.98
  5. Step 5: Solve for x
    x = 28,445,643,097.98/219,482.80
  6. Step 6: Final answer
    x = 129,603.06

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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.