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Finding the Fourth Proportional to 371,499.48, 512,661.96 and 218,554.20

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Solution

The fourth proportional to 371,499.48, 512,661.96 and 218,554.20 is: 301,600.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,499.48 : 512,661.96 = 218,554.20 : x
  2. Step 2: Convert to fraction form
    371,499.48/512,661.96 = 218,554.20/x
  3. Step 3: Cross multiply
    371,499.48x = 512,661.96 × 218,554.20
  4. Step 4: Simplify right side
    371,499.48x = 112,044,424,538.23
  5. Step 5: Solve for x
    x = 112,044,424,538.23/371,499.48
  6. Step 6: Final answer
    x = 301,600.49

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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.