Home / 209,321.10-288,854.40-118,683.20

Finding the Fourth Proportional to 209,321.10, 288,854.40 and 118,683.20

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Solution

The fourth proportional to 209,321.10, 288,854.40 and 118,683.20 is: 163,777.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,321.10 : 288,854.40 = 118,683.20 : x
  2. Step 2: Convert to fraction form
    209,321.10/288,854.40 = 118,683.20/x
  3. Step 3: Cross multiply
    209,321.10x = 288,854.40 × 118,683.20
  4. Step 4: Simplify right side
    209,321.10x = 34,282,163,081.81
  5. Step 5: Solve for x
    x = 34,282,163,081.81/209,321.10
  6. Step 6: Final answer
    x = 163,777.87

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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.