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Finding the Fourth Proportional to 312,311.03, 430,989.36 and 169,071.07

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Solution

The fourth proportional to 312,311.03, 430,989.36 and 169,071.07 is: 233,318.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,311.03 : 430,989.36 = 169,071.07 : x
  2. Step 2: Convert to fraction form
    312,311.03/430,989.36 = 169,071.07/x
  3. Step 3: Cross multiply
    312,311.03x = 430,989.36 × 169,071.07
  4. Step 4: Simplify right side
    312,311.03x = 72,867,829,253.51
  5. Step 5: Solve for x
    x = 72,867,829,253.51/312,311.03
  6. Step 6: Final answer
    x = 233,318.14

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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.