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Finding the Fourth Proportional to 371,699.36, 512,955.63 and 210,554.36

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Solution

The fourth proportional to 371,699.36, 512,955.63 and 210,554.36 is: 290,570.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,699.36 : 512,955.63 = 210,554.36 : x
  2. Step 2: Convert to fraction form
    371,699.36/512,955.63 = 210,554.36/x
  3. Step 3: Cross multiply
    371,699.36x = 512,955.63 × 210,554.36
  4. Step 4: Simplify right side
    371,699.36x = 108,005,044,383.05
  5. Step 5: Solve for x
    x = 108,005,044,383.05/371,699.36
  6. Step 6: Final answer
    x = 290,570.97

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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.