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Finding the Fourth Proportional to 445,880.40, 668,820.60 and 146,407.20

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Solution

The fourth proportional to 445,880.40, 668,820.60 and 146,407.20 is: 219,610.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,880.40 : 668,820.60 = 146,407.20 : x
  2. Step 2: Convert to fraction form
    445,880.40/668,820.60 = 146,407.20/x
  3. Step 3: Cross multiply
    445,880.40x = 668,820.60 × 146,407.20
  4. Step 4: Simplify right side
    445,880.40x = 97,920,151,348.32
  5. Step 5: Solve for x
    x = 97,920,151,348.32/445,880.40
  6. Step 6: Final answer
    x = 219,610.80

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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.