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Finding the Fourth Proportional to 445,828.80, 668,840.40 and 146,258.40

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Solution

The fourth proportional to 445,828.80, 668,840.40 and 146,258.40 is: 219,419.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,828.80 : 668,840.40 = 146,258.40 : x
  2. Step 2: Convert to fraction form
    445,828.80/668,840.40 = 146,258.40/x
  3. Step 3: Cross multiply
    445,828.80x = 668,840.40 × 146,258.40
  4. Step 4: Simplify right side
    445,828.80x = 97,823,526,759.36
  5. Step 5: Solve for x
    x = 97,823,526,759.36/445,828.80
  6. Step 6: Final answer
    x = 219,419.49

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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.