Home / 399,728.26-551,632.21-218,447.83

Finding the Fourth Proportional to 399,728.26, 551,632.21 and 218,447.83

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Solution

The fourth proportional to 399,728.26, 551,632.21 and 218,447.83 is: 301,461.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,728.26 : 551,632.21 = 218,447.83 : x
  2. Step 2: Convert to fraction form
    399,728.26/551,632.21 = 218,447.83/x
  3. Step 3: Cross multiply
    399,728.26x = 551,632.21 × 218,447.83
  4. Step 4: Simplify right side
    399,728.26x = 120,502,857,307.40
  5. Step 5: Solve for x
    x = 120,502,857,307.40/399,728.26
  6. Step 6: Final answer
    x = 301,461.94

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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.