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Finding the Fourth Proportional to 211,980.40, 292,469.16 and 127,066.48

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Solution

The fourth proportional to 211,980.40, 292,469.16 and 127,066.48 is: 175,313.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,980.40 : 292,469.16 = 127,066.48 : x
  2. Step 2: Convert to fraction form
    211,980.40/292,469.16 = 127,066.48/x
  3. Step 3: Cross multiply
    211,980.40x = 292,469.16 × 127,066.48
  4. Step 4: Simplify right side
    211,980.40x = 37,163,026,669.76
  5. Step 5: Solve for x
    x = 37,163,026,669.76/211,980.40
  6. Step 6: Final answer
    x = 175,313.50

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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.