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Finding the Fourth Proportional to 316,157.60, 436,308.72 and 180,212.06

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Solution

The fourth proportional to 316,157.60, 436,308.72 and 180,212.06 is: 248,699.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,157.60 : 436,308.72 = 180,212.06 : x
  2. Step 2: Convert to fraction form
    316,157.60/436,308.72 = 180,212.06/x
  3. Step 3: Cross multiply
    316,157.60x = 436,308.72 × 180,212.06
  4. Step 4: Simplify right side
    316,157.60x = 78,628,093,227.16
  5. Step 5: Solve for x
    x = 78,628,093,227.16/316,157.60
  6. Step 6: Final answer
    x = 248,699.05

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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.