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Finding the Fourth Proportional to 445,501.80, 668,252.70 and 208,868.40

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Solution

The fourth proportional to 445,501.80, 668,252.70 and 208,868.40 is: 313,302.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,501.80 : 668,252.70 = 208,868.40 : x
  2. Step 2: Convert to fraction form
    445,501.80/668,252.70 = 208,868.40/x
  3. Step 3: Cross multiply
    445,501.80x = 668,252.70 × 208,868.40
  4. Step 4: Simplify right side
    445,501.80x = 139,576,872,244.68
  5. Step 5: Solve for x
    x = 139,576,872,244.68/445,501.80
  6. Step 6: Final answer
    x = 313,302.60

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Similar ratio
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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.