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Finding the Fourth Proportional to 280,450.71, 420,048.68 and 130,466.25

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Solution

The fourth proportional to 280,450.71, 420,048.68 and 130,466.25 is: 195,407.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,450.71 : 420,048.68 = 130,466.25 : x
  2. Step 2: Convert to fraction form
    280,450.71/420,048.68 = 130,466.25/x
  3. Step 3: Cross multiply
    280,450.71x = 420,048.68 × 130,466.25
  4. Step 4: Simplify right side
    280,450.71x = 54,802,175,444.72
  5. Step 5: Solve for x
    x = 54,802,175,444.72/280,450.71
  6. Step 6: Final answer
    x = 195,407.51

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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.