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Finding the Fourth Proportional to 371,123.80, 556,653.30 and 121,805.80

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Solution

The fourth proportional to 371,123.80, 556,653.30 and 121,805.80 is: 182,698.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,123.80 : 556,653.30 = 121,805.80 : x
  2. Step 2: Convert to fraction form
    371,123.80/556,653.30 = 121,805.80/x
  3. Step 3: Cross multiply
    371,123.80x = 556,653.30 × 121,805.80
  4. Step 4: Simplify right side
    371,123.80x = 67,803,600,529.14
  5. Step 5: Solve for x
    x = 67,803,600,529.14/371,123.80
  6. Step 6: Final answer
    x = 182,698.07

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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.