Home / 312,328.13-431,015.04-169,088.54

Finding the Fourth Proportional to 312,328.13, 431,015.04 and 169,088.54

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Solution

The fourth proportional to 312,328.13, 431,015.04 and 169,088.54 is: 233,343.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,328.13 : 431,015.04 = 169,088.54 : x
  2. Step 2: Convert to fraction form
    312,328.13/431,015.04 = 169,088.54/x
  3. Step 3: Cross multiply
    312,328.13x = 431,015.04 × 169,088.54
  4. Step 4: Simplify right side
    312,328.13x = 72,879,701,676.57
  5. Step 5: Solve for x
    x = 72,879,701,676.57/312,328.13
  6. Step 6: Final answer
    x = 233,343.38

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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.