Home / 328,746.25-493,133.48-129,109.80

Finding the Fourth Proportional to 328,746.25, 493,133.48 and 129,109.80

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Solution

The fourth proportional to 328,746.25, 493,133.48 and 129,109.80 is: 193,670.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    328,746.25 : 493,133.48 = 129,109.80 : x
  2. Step 2: Convert to fraction form
    328,746.25/493,133.48 = 129,109.80/x
  3. Step 3: Cross multiply
    328,746.25x = 493,133.48 × 129,109.80
  4. Step 4: Simplify right side
    328,746.25x = 63,668,364,976.10
  5. Step 5: Solve for x
    x = 63,668,364,976.10/328,746.25
  6. Step 6: Final answer
    x = 193,670.24

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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.