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Finding the Fourth Proportional to 211,792.68, 317,595.72 and 99,504.81

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Solution

The fourth proportional to 211,792.68, 317,595.72 and 99,504.81 is: 149,213.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,792.68 : 317,595.72 = 99,504.81 : x
  2. Step 2: Convert to fraction form
    211,792.68/317,595.72 = 99,504.81/x
  3. Step 3: Cross multiply
    211,792.68x = 317,595.72 × 99,504.81
  4. Step 4: Simplify right side
    211,792.68x = 31,602,301,775.41
  5. Step 5: Solve for x
    x = 31,602,301,775.41/211,792.68
  6. Step 6: Final answer
    x = 149,213.38

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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.