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Finding the Fourth Proportional to 211,740.76, 317,330.79 and 155,316.67

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Solution

The fourth proportional to 211,740.76, 317,330.79 and 155,316.67 is: 232,769.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,740.76 : 317,330.79 = 155,316.67 : x
  2. Step 2: Convert to fraction form
    211,740.76/317,330.79 = 155,316.67/x
  3. Step 3: Cross multiply
    211,740.76x = 317,330.79 × 155,316.67
  4. Step 4: Simplify right side
    211,740.76x = 49,286,760,814.69
  5. Step 5: Solve for x
    x = 49,286,760,814.69/211,740.76
  6. Step 6: Final answer
    x = 232,769.36

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1.5x scale

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.