Home / 205,913.40-308,870.10-142,927.80

Finding the Fourth Proportional to 205,913.40, 308,870.10 and 142,927.80

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Solution

The fourth proportional to 205,913.40, 308,870.10 and 142,927.80 is: 214,391.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,913.40 : 308,870.10 = 142,927.80 : x
  2. Step 2: Convert to fraction form
    205,913.40/308,870.10 = 142,927.80/x
  3. Step 3: Cross multiply
    205,913.40x = 308,870.10 × 142,927.80
  4. Step 4: Simplify right side
    205,913.40x = 44,146,123,878.78
  5. Step 5: Solve for x
    x = 44,146,123,878.78/205,913.40
  6. Step 6: Final answer
    x = 214,391.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.