Home / 312,621.58-431,417.19-169,385.50

Finding the Fourth Proportional to 312,621.58, 431,417.19 and 169,385.50

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Solution

The fourth proportional to 312,621.58, 431,417.19 and 169,385.50 is: 233,751.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,621.58 : 431,417.19 = 169,385.50 : x
  2. Step 2: Convert to fraction form
    312,621.58/431,417.19 = 169,385.50/x
  3. Step 3: Cross multiply
    312,621.58x = 431,417.19 × 169,385.50
  4. Step 4: Simplify right side
    312,621.58x = 73,075,816,436.75
  5. Step 5: Solve for x
    x = 73,075,816,436.75/312,621.58
  6. Step 6: Final answer
    x = 233,751.67

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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.