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Finding the Fourth Proportional to 446,900.40, 670,350.60 and 147,427.20

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Solution

The fourth proportional to 446,900.40, 670,350.60 and 147,427.20 is: 221,140.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,900.40 : 670,350.60 = 147,427.20 : x
  2. Step 2: Convert to fraction form
    446,900.40/670,350.60 = 147,427.20/x
  3. Step 3: Cross multiply
    446,900.40x = 670,350.60 × 147,427.20
  4. Step 4: Simplify right side
    446,900.40x = 98,827,911,976.32
  5. Step 5: Solve for x
    x = 98,827,911,976.32/446,900.40
  6. Step 6: Final answer
    x = 221,140.80

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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.