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Finding the Fourth Proportional to 312,315.81, 430,996.79 and 169,075.52

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Solution

The fourth proportional to 312,315.81, 430,996.79 and 169,075.52 is: 233,324.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,315.81 : 430,996.79 = 169,075.52 : x
  2. Step 2: Convert to fraction form
    312,315.81/430,996.79 = 169,075.52/x
  3. Step 3: Cross multiply
    312,315.81x = 430,996.79 × 169,075.52
  4. Step 4: Simplify right side
    312,315.81x = 72,871,003,387.22
  5. Step 5: Solve for x
    x = 72,871,003,387.22/312,315.81
  6. Step 6: Final answer
    x = 233,324.73

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1.5x scale

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.