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Finding the Fourth Proportional to 314,776.50, 434,390.90 and 171,536.20

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Solution

The fourth proportional to 314,776.50, 434,390.90 and 171,536.20 is: 236,719.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    314,776.50 : 434,390.90 = 171,536.20 : x
  2. Step 2: Convert to fraction form
    314,776.50/434,390.90 = 171,536.20/x
  3. Step 3: Cross multiply
    314,776.50x = 434,390.90 × 171,536.20
  4. Step 4: Simplify right side
    314,776.50x = 74,513,764,300.58
  5. Step 5: Solve for x
    x = 74,513,764,300.58/314,776.50
  6. Step 6: Final answer
    x = 236,719.59

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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.