Home / 312,402.06-431,146.66-225,258.84

Finding the Fourth Proportional to 312,402.06, 431,146.66 and 225,258.84

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Solution

The fourth proportional to 312,402.06, 431,146.66 and 225,258.84 is: 310,880.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,402.06 : 431,146.66 = 225,258.84 : x
  2. Step 2: Convert to fraction form
    312,402.06/431,146.66 = 225,258.84/x
  3. Step 3: Cross multiply
    312,402.06x = 431,146.66 × 225,258.84
  4. Step 4: Simplify right side
    312,402.06x = 97,119,596,501.47
  5. Step 5: Solve for x
    x = 97,119,596,501.47/312,402.06
  6. Step 6: Final answer
    x = 310,880.14

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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.