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Finding the Fourth Proportional to 290,400.60, 400,911.66 and 175,698.84

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Solution

The fourth proportional to 290,400.60, 400,911.66 and 175,698.84 is: 242,560.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    290,400.60 : 400,911.66 = 175,698.84 : x
  2. Step 2: Convert to fraction form
    290,400.60/400,911.66 = 175,698.84/x
  3. Step 3: Cross multiply
    290,400.60x = 400,911.66 × 175,698.84
  4. Step 4: Simplify right side
    290,400.60x = 70,439,713,604.47
  5. Step 5: Solve for x
    x = 70,439,713,604.47/290,400.60
  6. Step 6: Final answer
    x = 242,560.50

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.