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Finding the Fourth Proportional to 445,287.60, 668,368.80 and 220,901.40

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Solution

The fourth proportional to 445,287.60, 668,368.80 and 220,901.40 is: 331,569.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,287.60 : 668,368.80 = 220,901.40 : x
  2. Step 2: Convert to fraction form
    445,287.60/668,368.80 = 220,901.40/x
  3. Step 3: Cross multiply
    445,287.60x = 668,368.80 × 220,901.40
  4. Step 4: Simplify right side
    445,287.60x = 147,643,603,636.32
  5. Step 5: Solve for x
    x = 147,643,603,636.32/445,287.60
  6. Step 6: Final answer
    x = 331,569.09

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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.