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Finding the Fourth Proportional to 210,246.50, 290,173.40 and 133,685.80

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Solution

The fourth proportional to 210,246.50, 290,173.40 and 133,685.80 is: 184,507.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,246.50 : 290,173.40 = 133,685.80 : x
  2. Step 2: Convert to fraction form
    210,246.50/290,173.40 = 133,685.80/x
  3. Step 3: Cross multiply
    210,246.50x = 290,173.40 × 133,685.80
  4. Step 4: Simplify right side
    210,246.50x = 38,792,063,117.72
  5. Step 5: Solve for x
    x = 38,792,063,117.72/210,246.50
  6. Step 6: Final answer
    x = 184,507.53

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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.