Home / 312,309.32-430,990.29-169,072.40

Finding the Fourth Proportional to 312,309.32, 430,990.29 and 169,072.40

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Solution

The fourth proportional to 312,309.32, 430,990.29 and 169,072.40 is: 233,321.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,309.32 : 430,990.29 = 169,072.40 : x
  2. Step 2: Convert to fraction form
    312,309.32/430,990.29 = 169,072.40/x
  3. Step 3: Cross multiply
    312,309.32x = 430,990.29 × 169,072.40
  4. Step 4: Simplify right side
    312,309.32x = 72,868,562,707.00
  5. Step 5: Solve for x
    x = 72,868,562,707.00/312,309.32
  6. Step 6: Final answer
    x = 233,321.77

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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.