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Finding the Fourth Proportional to 351,697.72, 485,075.06 and 302,722.69

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Solution

The fourth proportional to 351,697.72, 485,075.06 and 302,722.69 is: 417,526.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,697.72 : 485,075.06 = 302,722.69 : x
  2. Step 2: Convert to fraction form
    351,697.72/485,075.06 = 302,722.69/x
  3. Step 3: Cross multiply
    351,697.72x = 485,075.06 × 302,722.69
  4. Step 4: Simplify right side
    351,697.72x = 146,843,225,501.50
  5. Step 5: Solve for x
    x = 146,843,225,501.50/351,697.72
  6. Step 6: Final answer
    x = 417,526.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.