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Finding the Fourth Proportional to 210,507.08, 290,503.95 and 115,019.69

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Solution

The fourth proportional to 210,507.08, 290,503.95 and 115,019.69 is: 158,729.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,507.08 : 290,503.95 = 115,019.69 : x
  2. Step 2: Convert to fraction form
    210,507.08/290,503.95 = 115,019.69/x
  3. Step 3: Cross multiply
    210,507.08x = 290,503.95 × 115,019.69
  4. Step 4: Simplify right side
    210,507.08x = 33,413,674,272.78
  5. Step 5: Solve for x
    x = 33,413,674,272.78/210,507.08
  6. Step 6: Final answer
    x = 158,729.46

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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.