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Finding the Fourth Proportional to 305,570.71, 421,681.24 and 169,596.69

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Solution

The fourth proportional to 305,570.71, 421,681.24 and 169,596.69 is: 234,039.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    305,570.71 : 421,681.24 = 169,596.69 : x
  2. Step 2: Convert to fraction form
    305,570.71/421,681.24 = 169,596.69/x
  3. Step 3: Cross multiply
    305,570.71x = 421,681.24 × 169,596.69
  4. Step 4: Simplify right side
    305,570.71x = 71,515,742,539.10
  5. Step 5: Solve for x
    x = 71,515,742,539.10/305,570.71
  6. Step 6: Final answer
    x = 234,039.91

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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.