Home / 209,281.47-288,816.81-118,648.55

Finding the Fourth Proportional to 209,281.47, 288,816.81 and 118,648.55

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Solution

The fourth proportional to 209,281.47, 288,816.81 and 118,648.55 is: 163,739.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,281.47 : 288,816.81 = 118,648.55 : x
  2. Step 2: Convert to fraction form
    209,281.47/288,816.81 = 118,648.55/x
  3. Step 3: Cross multiply
    209,281.47x = 288,816.81 × 118,648.55
  4. Step 4: Simplify right side
    209,281.47x = 34,267,695,375.74
  5. Step 5: Solve for x
    x = 34,267,695,375.74/209,281.47
  6. Step 6: Final answer
    x = 163,739.75

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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.