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Finding the Fourth Proportional to 213,518.45, 294,642.79 and 118,019.45

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Solution

The fourth proportional to 213,518.45, 294,642.79 and 118,019.45 is: 162,859.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,518.45 : 294,642.79 = 118,019.45 : x
  2. Step 2: Convert to fraction form
    213,518.45/294,642.79 = 118,019.45/x
  3. Step 3: Cross multiply
    213,518.45x = 294,642.79 × 118,019.45
  4. Step 4: Simplify right side
    213,518.45x = 34,773,580,022.27
  5. Step 5: Solve for x
    x = 34,773,580,022.27/213,518.45
  6. Step 6: Final answer
    x = 162,859.84

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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.