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Finding the Fourth Proportional to 538,005.58, 742,419.26 and 308,551

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Solution

The fourth proportional to 538,005.58, 742,419.26 and 308,551 is: 425,784.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,005.58 : 742,419.26 = 308,551 : x
  2. Step 2: Convert to fraction form
    538,005.58/742,419.26 = 308,551/x
  3. Step 3: Cross multiply
    538,005.58x = 742,419.26 × 308,551
  4. Step 4: Simplify right side
    538,005.58x = 229,074,205,092.26
  5. Step 5: Solve for x
    x = 229,074,205,092.26/538,005.58
  6. Step 6: Final answer
    x = 425,784.07

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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.