Home / 209,216.78-288,709.84-118,567.43

Finding the Fourth Proportional to 209,216.78, 288,709.84 and 118,567.43

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Solution

The fourth proportional to 209,216.78, 288,709.84 and 118,567.43 is: 163,617.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,216.78 : 288,709.84 = 118,567.43 : x
  2. Step 2: Convert to fraction form
    209,216.78/288,709.84 = 118,567.43/x
  3. Step 3: Cross multiply
    209,216.78x = 288,709.84 × 118,567.43
  4. Step 4: Simplify right side
    209,216.78x = 34,231,583,744.51
  5. Step 5: Solve for x
    x = 34,231,583,744.51/209,216.78
  6. Step 6: Final answer
    x = 163,617.77

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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.