Home / 209,140.89-288,591-118,477.44

Finding the Fourth Proportional to 209,140.89, 288,591 and 118,477.44

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Solution

The fourth proportional to 209,140.89, 288,591 and 118,477.44 is: 163,485.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,140.89 : 288,591 = 118,477.44 : x
  2. Step 2: Convert to fraction form
    209,140.89/288,591 = 118,477.44/x
  3. Step 3: Cross multiply
    209,140.89x = 288,591 × 118,477.44
  4. Step 4: Simplify right side
    209,140.89x = 34,191,522,887.04
  5. Step 5: Solve for x
    x = 34,191,522,887.04/209,140.89
  6. Step 6: Final answer
    x = 163,485.60

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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.