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Finding the Fourth Proportional to 357,728.86, 536,618.13 and 120,991.51

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Solution

The fourth proportional to 357,728.86, 536,618.13 and 120,991.51 is: 181,495.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,728.86 : 536,618.13 = 120,991.51 : x
  2. Step 2: Convert to fraction form
    357,728.86/536,618.13 = 120,991.51/x
  3. Step 3: Cross multiply
    357,728.86x = 536,618.13 × 120,991.51
  4. Step 4: Simplify right side
    357,728.86x = 64,926,237,842.08
  5. Step 5: Solve for x
    x = 64,926,237,842.08/357,728.86
  6. Step 6: Final answer
    x = 181,495.67

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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.