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Finding the Fourth Proportional to 229,967.51, 317,352.53 and 127,991.21

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Solution

The fourth proportional to 229,967.51, 317,352.53 and 127,991.21 is: 176,626.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,967.51 : 317,352.53 = 127,991.21 : x
  2. Step 2: Convert to fraction form
    229,967.51/317,352.53 = 127,991.21/x
  3. Step 3: Cross multiply
    229,967.51x = 317,352.53 × 127,991.21
  4. Step 4: Simplify right side
    229,967.51x = 40,618,333,044.48
  5. Step 5: Solve for x
    x = 40,618,333,044.48/229,967.51
  6. Step 6: Final answer
    x = 176,626.40

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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.