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Finding the Fourth Proportional to 492,316.32, 738,474.48 and 155,383.20

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Solution

The fourth proportional to 492,316.32, 738,474.48 and 155,383.20 is: 233,074.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    492,316.32 : 738,474.48 = 155,383.20 : x
  2. Step 2: Convert to fraction form
    492,316.32/738,474.48 = 155,383.20/x
  3. Step 3: Cross multiply
    492,316.32x = 738,474.48 × 155,383.20
  4. Step 4: Simplify right side
    492,316.32x = 114,746,527,820.74
  5. Step 5: Solve for x
    x = 114,746,527,820.74/492,316.32
  6. Step 6: Final answer
    x = 233,074.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.