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Finding the Fourth Proportional to 317,383.81, 437,989.66 and 181,420.70

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Solution

The fourth proportional to 317,383.81, 437,989.66 and 181,420.70 is: 250,360.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,383.81 : 437,989.66 = 181,420.70 : x
  2. Step 2: Convert to fraction form
    317,383.81/437,989.66 = 181,420.70/x
  3. Step 3: Cross multiply
    317,383.81x = 437,989.66 × 181,420.70
  4. Step 4: Simplify right side
    317,383.81x = 79,460,390,870.32
  5. Step 5: Solve for x
    x = 79,460,390,870.32/317,383.81
  6. Step 6: Final answer
    x = 250,360.57

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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.