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Finding the Fourth Proportional to 210,392.40, 290,336.90 and 114,899.48

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Solution

The fourth proportional to 210,392.40, 290,336.90 and 114,899.48 is: 158,558.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,392.40 : 290,336.90 = 114,899.48 : x
  2. Step 2: Convert to fraction form
    210,392.40/290,336.90 = 114,899.48/x
  3. Step 3: Cross multiply
    210,392.40x = 290,336.90 × 114,899.48
  4. Step 4: Simplify right side
    210,392.40x = 33,359,558,834.81
  5. Step 5: Solve for x
    x = 33,359,558,834.81/210,392.40
  6. Step 6: Final answer
    x = 158,558.76

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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.