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Finding the Fourth Proportional to 554,978.31, 832,130.36 and 217,614.80

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Solution

The fourth proportional to 554,978.31, 832,130.36 and 217,614.80 is: 326,290.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,978.31 : 832,130.36 = 217,614.80 : x
  2. Step 2: Convert to fraction form
    554,978.31/832,130.36 = 217,614.80/x
  3. Step 3: Cross multiply
    554,978.31x = 832,130.36 × 217,614.80
  4. Step 4: Simplify right side
    554,978.31x = 181,083,876,616.60
  5. Step 5: Solve for x
    x = 181,083,876,616.60/554,978.31
  6. Step 6: Final answer
    x = 326,290.01

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.