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Finding the Fourth Proportional to 317,178.13, 475,786.41 and 127,637.77

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Solution

The fourth proportional to 317,178.13, 475,786.41 and 127,637.77 is: 191,464.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,178.13 : 475,786.41 = 127,637.77 : x
  2. Step 2: Convert to fraction form
    317,178.13/475,786.41 = 127,637.77/x
  3. Step 3: Cross multiply
    317,178.13x = 475,786.41 × 127,637.77
  4. Step 4: Simplify right side
    317,178.13x = 60,728,316,368.71
  5. Step 5: Solve for x
    x = 60,728,316,368.71/317,178.13
  6. Step 6: Final answer
    x = 191,464.39

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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.