Home / 209,008.70-288,438.82-118,362.72

Finding the Fourth Proportional to 209,008.70, 288,438.82 and 118,362.72

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Solution

The fourth proportional to 209,008.70, 288,438.82 and 118,362.72 is: 163,344.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,008.70 : 288,438.82 = 118,362.72 : x
  2. Step 2: Convert to fraction form
    209,008.70/288,438.82 = 118,362.72/x
  3. Step 3: Cross multiply
    209,008.70x = 288,438.82 × 118,362.72
  4. Step 4: Simplify right side
    209,008.70x = 34,140,403,117.85
  5. Step 5: Solve for x
    x = 34,140,403,117.85/209,008.70
  6. Step 6: Final answer
    x = 163,344.41

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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.