Home / 218,989.30-302,205.32-118,387.30

Finding the Fourth Proportional to 218,989.30, 302,205.32 and 118,387.30

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Solution

The fourth proportional to 218,989.30, 302,205.32 and 118,387.30 is: 163,374.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,989.30 : 302,205.32 = 118,387.30 : x
  2. Step 2: Convert to fraction form
    218,989.30/302,205.32 = 118,387.30/x
  3. Step 3: Cross multiply
    218,989.30x = 302,205.32 × 118,387.30
  4. Step 4: Simplify right side
    218,989.30x = 35,777,271,880.44
  5. Step 5: Solve for x
    x = 35,777,271,880.44/218,989.30
  6. Step 6: Final answer
    x = 163,374.52

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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.