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Finding the Fourth Proportional to 210,026.70, 314,958.15 and 91,617.30

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Solution

The fourth proportional to 210,026.70, 314,958.15 and 91,617.30 is: 137,390.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,026.70 : 314,958.15 = 91,617.30 : x
  2. Step 2: Convert to fraction form
    210,026.70/314,958.15 = 91,617.30/x
  3. Step 3: Cross multiply
    210,026.70x = 314,958.15 × 91,617.30
  4. Step 4: Simplify right side
    210,026.70x = 28,855,615,316.00
  5. Step 5: Solve for x
    x = 28,855,615,316.00/210,026.70
  6. Step 6: Final answer
    x = 137,390.22

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.