Home / 208,913.48-288,318.45-118,285.42

Finding the Fourth Proportional to 208,913.48, 288,318.45 and 118,285.42

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Solution

The fourth proportional to 208,913.48, 288,318.45 and 118,285.42 is: 163,243.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,913.48 : 288,318.45 = 118,285.42 : x
  2. Step 2: Convert to fraction form
    208,913.48/288,318.45 = 118,285.42/x
  3. Step 3: Cross multiply
    208,913.48x = 288,318.45 × 118,285.42
  4. Step 4: Simplify right side
    208,913.48x = 34,103,868,231.20
  5. Step 5: Solve for x
    x = 34,103,868,231.20/208,913.48
  6. Step 6: Final answer
    x = 163,243.98

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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.