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Finding the Fourth Proportional to 201,719.70, 302,579.55 and 103,415.70

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Solution

The fourth proportional to 201,719.70, 302,579.55 and 103,415.70 is: 155,123.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,719.70 : 302,579.55 = 103,415.70 : x
  2. Step 2: Convert to fraction form
    201,719.70/302,579.55 = 103,415.70/x
  3. Step 3: Cross multiply
    201,719.70x = 302,579.55 × 103,415.70
  4. Step 4: Simplify right side
    201,719.70x = 31,291,475,968.94
  5. Step 5: Solve for x
    x = 31,291,475,968.94/201,719.70
  6. Step 6: Final answer
    x = 155,123.55

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1.5x scale

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.