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Finding the Fourth Proportional to 538,302.58, 742,874.40 and 308,901.87

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Solution

The fourth proportional to 538,302.58, 742,874.40 and 308,901.87 is: 426,294.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,302.58 : 742,874.40 = 308,901.87 : x
  2. Step 2: Convert to fraction form
    538,302.58/742,874.40 = 308,901.87/x
  3. Step 3: Cross multiply
    538,302.58x = 742,874.40 × 308,901.87
  4. Step 4: Simplify right side
    538,302.58x = 229,475,291,335.13
  5. Step 5: Solve for x
    x = 229,475,291,335.13/538,302.58
  6. Step 6: Final answer
    x = 426,294.24

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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.