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Finding the Fourth Proportional to 317,649.80, 438,363.80 and 174,410.42

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Solution

The fourth proportional to 317,649.80, 438,363.80 and 174,410.42 is: 240,690.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,649.80 : 438,363.80 = 174,410.42 : x
  2. Step 2: Convert to fraction form
    317,649.80/438,363.80 = 174,410.42/x
  3. Step 3: Cross multiply
    317,649.80x = 438,363.80 × 174,410.42
  4. Step 4: Simplify right side
    317,649.80x = 76,455,212,060.96
  5. Step 5: Solve for x
    x = 76,455,212,060.96/317,649.80
  6. Step 6: Final answer
    x = 240,690.26

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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.