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Finding the Fourth Proportional to 446,530.40, 669,730.80 and 130,954.40

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Solution

The fourth proportional to 446,530.40, 669,730.80 and 130,954.40 is: 196,412.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,530.40 : 669,730.80 = 130,954.40 : x
  2. Step 2: Convert to fraction form
    446,530.40/669,730.80 = 130,954.40/x
  3. Step 3: Cross multiply
    446,530.40x = 669,730.80 × 130,954.40
  4. Step 4: Simplify right side
    446,530.40x = 87,704,195,075.52
  5. Step 5: Solve for x
    x = 87,704,195,075.52/446,530.40
  6. Step 6: Final answer
    x = 196,412.60

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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.