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Finding the Fourth Proportional to 311,608.87, 430,020.48 and 168,368.88

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Solution

The fourth proportional to 311,608.87, 430,020.48 and 168,368.88 is: 232,349.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    311,608.87 : 430,020.48 = 168,368.88 : x
  2. Step 2: Convert to fraction form
    311,608.87/430,020.48 = 168,368.88/x
  3. Step 3: Cross multiply
    311,608.87x = 430,020.48 × 168,368.88
  4. Step 4: Simplify right side
    311,608.87x = 72,402,066,594.66
  5. Step 5: Solve for x
    x = 72,402,066,594.66/311,608.87
  6. Step 6: Final answer
    x = 232,349.18

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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.