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Finding the Fourth Proportional to 312,124.49, 430,728.72 and 168,881.39

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Solution

The fourth proportional to 312,124.49, 430,728.72 and 168,881.39 is: 233,054.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,124.49 : 430,728.72 = 168,881.39 : x
  2. Step 2: Convert to fraction form
    312,124.49/430,728.72 = 168,881.39/x
  3. Step 3: Cross multiply
    312,124.49x = 430,728.72 × 168,881.39
  4. Step 4: Simplify right side
    312,124.49x = 72,742,062,792.88
  5. Step 5: Solve for x
    x = 72,742,062,792.88/312,124.49
  6. Step 6: Final answer
    x = 233,054.65

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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.