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Finding the Fourth Proportional to 210,503.04, 290,490.78 and 115,007.68

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Solution

The fourth proportional to 210,503.04, 290,490.78 and 115,007.68 is: 158,708.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,503.04 : 290,490.78 = 115,007.68 : x
  2. Step 2: Convert to fraction form
    210,503.04/290,490.78 = 115,007.68/x
  3. Step 3: Cross multiply
    210,503.04x = 290,490.78 × 115,007.68
  4. Step 4: Simplify right side
    210,503.04x = 33,408,670,669.19
  5. Step 5: Solve for x
    x = 33,408,670,669.19/210,503.04
  6. Step 6: Final answer
    x = 158,708.73

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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.