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Finding the Fourth Proportional to 210,015.70, 314,941.65 and 91,606.30

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Solution

The fourth proportional to 210,015.70, 314,941.65 and 91,606.30 is: 137,373.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,015.70 : 314,941.65 = 91,606.30 : x
  2. Step 2: Convert to fraction form
    210,015.70/314,941.65 = 91,606.30/x
  3. Step 3: Cross multiply
    210,015.70x = 314,941.65 × 91,606.30
  4. Step 4: Simplify right side
    210,015.70x = 28,850,639,272.40
  5. Step 5: Solve for x
    x = 28,850,639,272.40/210,015.70
  6. Step 6: Final answer
    x = 137,373.73

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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.