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Finding the Fourth Proportional to 210,693.75, 290,762.64 and 127,908.74

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Solution

The fourth proportional to 210,693.75, 290,762.64 and 127,908.74 is: 176,517.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,693.75 : 290,762.64 = 127,908.74 : x
  2. Step 2: Convert to fraction form
    210,693.75/290,762.64 = 127,908.74/x
  3. Step 3: Cross multiply
    210,693.75x = 290,762.64 × 127,908.74
  4. Step 4: Simplify right side
    210,693.75x = 37,191,081,467.66
  5. Step 5: Solve for x
    x = 37,191,081,467.66/210,693.75
  6. Step 6: Final answer
    x = 176,517.25

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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.