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Finding the Fourth Proportional to 402,596.82, 555,590.52 and 221,316.40

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Solution

The fourth proportional to 402,596.82, 555,590.52 and 221,316.40 is: 305,420.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,596.82 : 555,590.52 = 221,316.40 : x
  2. Step 2: Convert to fraction form
    402,596.82/555,590.52 = 221,316.40/x
  3. Step 3: Cross multiply
    402,596.82x = 555,590.52 × 221,316.40
  4. Step 4: Simplify right side
    402,596.82x = 122,961,293,760.53
  5. Step 5: Solve for x
    x = 122,961,293,760.53/402,596.82
  6. Step 6: Final answer
    x = 305,420.43

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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.