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Finding the Fourth Proportional to 317,671.70, 438,426.44 and 181,686.77

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Solution

The fourth proportional to 317,671.70, 438,426.44 and 181,686.77 is: 250,750.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,671.70 : 438,426.44 = 181,686.77 : x
  2. Step 2: Convert to fraction form
    317,671.70/438,426.44 = 181,686.77/x
  3. Step 3: Cross multiply
    317,671.70x = 438,426.44 × 181,686.77
  4. Step 4: Simplify right side
    317,671.70x = 79,656,282,991.06
  5. Step 5: Solve for x
    x = 79,656,282,991.06/317,671.70
  6. Step 6: Final answer
    x = 250,750.33

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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.