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Finding the Fourth Proportional to 380,047.70, 570,071.55 and 99,593.30

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Solution

The fourth proportional to 380,047.70, 570,071.55 and 99,593.30 is: 149,389.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,047.70 : 570,071.55 = 99,593.30 : x
  2. Step 2: Convert to fraction form
    380,047.70/570,071.55 = 99,593.30/x
  3. Step 3: Cross multiply
    380,047.70x = 570,071.55 × 99,593.30
  4. Step 4: Simplify right side
    380,047.70x = 56,775,306,900.62
  5. Step 5: Solve for x
    x = 56,775,306,900.62/380,047.70
  6. Step 6: Final answer
    x = 149,389.95

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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.