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Finding the Fourth Proportional to 209,133.49, 288,603.21 and 118,489.28

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Solution

The fourth proportional to 209,133.49, 288,603.21 and 118,489.28 is: 163,514.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,133.49 : 288,603.21 = 118,489.28 : x
  2. Step 2: Convert to fraction form
    209,133.49/288,603.21 = 118,489.28/x
  3. Step 3: Cross multiply
    209,133.49x = 288,603.21 × 118,489.28
  4. Step 4: Simplify right side
    209,133.49x = 34,196,386,558.59
  5. Step 5: Solve for x
    x = 34,196,386,558.59/209,133.49
  6. Step 6: Final answer
    x = 163,514.64

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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.