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Finding the Fourth Proportional to 538,159.60, 742,664.02 and 308,726.90

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Solution

The fourth proportional to 538,159.60, 742,664.02 and 308,726.90 is: 426,045.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    538,159.60 : 742,664.02 = 308,726.90 : x
  2. Step 2: Convert to fraction form
    538,159.60/742,664.02 = 308,726.90/x
  3. Step 3: Cross multiply
    538,159.60x = 742,664.02 × 308,726.90
  4. Step 4: Simplify right side
    538,159.60x = 229,280,360,636.14
  5. Step 5: Solve for x
    x = 229,280,360,636.14/538,159.60
  6. Step 6: Final answer
    x = 426,045.29

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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.