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Finding the Fourth Proportional to 317,418.55, 438,030.89 and 181,460.05

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Solution

The fourth proportional to 317,418.55, 438,030.89 and 181,460.05 is: 250,411.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,418.55 : 438,030.89 = 181,460.05 : x
  2. Step 2: Convert to fraction form
    317,418.55/438,030.89 = 181,460.05/x
  3. Step 3: Cross multiply
    317,418.55x = 438,030.89 × 181,460.05
  4. Step 4: Simplify right side
    317,418.55x = 79,485,105,879.04
  5. Step 5: Solve for x
    x = 79,485,105,879.04/317,418.55
  6. Step 6: Final answer
    x = 250,411.03

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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.