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Finding the Fourth Proportional to 316,919.48, 475,369.46 and 129,790.04

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Solution

The fourth proportional to 316,919.48, 475,369.46 and 129,790.04 is: 194,681.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,919.48 : 475,369.46 = 129,790.04 : x
  2. Step 2: Convert to fraction form
    316,919.48/475,369.46 = 129,790.04/x
  3. Step 3: Cross multiply
    316,919.48x = 475,369.46 × 129,790.04
  4. Step 4: Simplify right side
    316,919.48x = 61,698,221,228.18
  5. Step 5: Solve for x
    x = 61,698,221,228.18/316,919.48
  6. Step 6: Final answer
    x = 194,681.06

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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.