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Finding the Fourth Proportional to 210,475.68, 290,460.72 and 114,988.56

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Solution

The fourth proportional to 210,475.68, 290,460.72 and 114,988.56 is: 158,686.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,475.68 : 290,460.72 = 114,988.56 : x
  2. Step 2: Convert to fraction form
    210,475.68/290,460.72 = 114,988.56/x
  3. Step 3: Cross multiply
    210,475.68x = 290,460.72 × 114,988.56
  4. Step 4: Simplify right side
    210,475.68x = 33,399,659,929.36
  5. Step 5: Solve for x
    x = 33,399,659,929.36/210,475.68
  6. Step 6: Final answer
    x = 158,686.55

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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.