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Finding the Fourth Proportional to 445,799.46, 668,798.55 and 209,015.94

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Solution

The fourth proportional to 445,799.46, 668,798.55 and 209,015.94 is: 313,570.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,799.46 : 668,798.55 = 209,015.94 : x
  2. Step 2: Convert to fraction form
    445,799.46/668,798.55 = 209,015.94/x
  3. Step 3: Cross multiply
    445,799.46x = 668,798.55 × 209,015.94
  4. Step 4: Simplify right side
    445,799.46x = 139,789,557,598.89
  5. Step 5: Solve for x
    x = 139,789,557,598.89/445,799.46
  6. Step 6: Final answer
    x = 313,570.50

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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.