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Finding the Fourth Proportional to 402,237.79, 555,055.09 and 220,940.35

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Solution

The fourth proportional to 402,237.79, 555,055.09 and 220,940.35 is: 304,879.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,237.79 : 555,055.09 = 220,940.35 : x
  2. Step 2: Convert to fraction form
    402,237.79/555,055.09 = 220,940.35/x
  3. Step 3: Cross multiply
    402,237.79x = 555,055.09 × 220,940.35
  4. Step 4: Simplify right side
    402,237.79x = 122,634,063,913.89
  5. Step 5: Solve for x
    x = 122,634,063,913.89/402,237.79
  6. Step 6: Final answer
    x = 304,879.52

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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.