Home / 209,005.12-288,444.86-118,377.21

Finding the Fourth Proportional to 209,005.12, 288,444.86 and 118,377.21

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Solution

The fourth proportional to 209,005.12, 288,444.86 and 118,377.21 is: 163,370.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,005.12 : 288,444.86 = 118,377.21 : x
  2. Step 2: Convert to fraction form
    209,005.12/288,444.86 = 118,377.21/x
  3. Step 3: Cross multiply
    209,005.12x = 288,444.86 × 118,377.21
  4. Step 4: Simplify right side
    209,005.12x = 34,145,297,765.64
  5. Step 5: Solve for x
    x = 34,145,297,765.64/209,005.12
  6. Step 6: Final answer
    x = 163,370.63

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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.