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Finding the Fourth Proportional to 316,131.80, 435,749.76 and 247,101.03

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Solution

The fourth proportional to 316,131.80, 435,749.76 and 247,101.03 is: 340,599.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,131.80 : 435,749.76 = 247,101.03 : x
  2. Step 2: Convert to fraction form
    316,131.80/435,749.76 = 247,101.03/x
  3. Step 3: Cross multiply
    316,131.80x = 435,749.76 × 247,101.03
  4. Step 4: Simplify right side
    316,131.80x = 107,674,214,518.25
  5. Step 5: Solve for x
    x = 107,674,214,518.25/316,131.80
  6. Step 6: Final answer
    x = 340,599.13

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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.