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Finding the Fourth Proportional to 316,437.60, 436,680.56 and 171,240.20

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Solution

The fourth proportional to 316,437.60, 436,680.56 and 171,240.20 is: 236,309.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,437.60 : 436,680.56 = 171,240.20 : x
  2. Step 2: Convert to fraction form
    316,437.60/436,680.56 = 171,240.20/x
  3. Step 3: Cross multiply
    316,437.60x = 436,680.56 × 171,240.20
  4. Step 4: Simplify right side
    316,437.60x = 74,777,266,430.51
  5. Step 5: Solve for x
    x = 74,777,266,430.51/316,437.60
  6. Step 6: Final answer
    x = 236,309.68

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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.