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Finding the Fourth Proportional to 210,692.09, 316,081.89 and 70,447.07

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Solution

The fourth proportional to 210,692.09, 316,081.89 and 70,447.07 is: 105,685.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,692.09 : 316,081.89 = 70,447.07 : x
  2. Step 2: Convert to fraction form
    210,692.09/316,081.89 = 70,447.07/x
  3. Step 3: Cross multiply
    210,692.09x = 316,081.89 × 70,447.07
  4. Step 4: Simplify right side
    210,692.09x = 22,267,043,820.77
  5. Step 5: Solve for x
    x = 22,267,043,820.77/210,692.09
  6. Step 6: Final answer
    x = 105,685.24

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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.