Home / 209,011.47-288,239.36-161,189.07

Finding the Fourth Proportional to 209,011.47, 288,239.36 and 161,189.07

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Solution

The fourth proportional to 209,011.47, 288,239.36 and 161,189.07 is: 222,289.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,011.47 : 288,239.36 = 161,189.07 : x
  2. Step 2: Convert to fraction form
    209,011.47/288,239.36 = 161,189.07/x
  3. Step 3: Cross multiply
    209,011.47x = 288,239.36 × 161,189.07
  4. Step 4: Simplify right side
    209,011.47x = 46,461,033,569.85
  5. Step 5: Solve for x
    x = 46,461,033,569.85/209,011.47
  6. Step 6: Final answer
    x = 222,289.40

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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.