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Finding the Fourth Proportional to 406,630.79, 561,143.63 and 225,342.35

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Solution

The fourth proportional to 406,630.79, 561,143.63 and 225,342.35 is: 310,968.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    406,630.79 : 561,143.63 = 225,342.35 : x
  2. Step 2: Convert to fraction form
    406,630.79/561,143.63 = 225,342.35/x
  3. Step 3: Cross multiply
    406,630.79x = 561,143.63 × 225,342.35
  4. Step 4: Simplify right side
    406,630.79x = 126,449,424,271.73
  5. Step 5: Solve for x
    x = 126,449,424,271.73/406,630.79
  6. Step 6: Final answer
    x = 310,968.64

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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.