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Finding the Fourth Proportional to 423,501.93, 635,118.02 and 139,126.47

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Solution

The fourth proportional to 423,501.93, 635,118.02 and 139,126.47 is: 208,645.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,501.93 : 635,118.02 = 139,126.47 : x
  2. Step 2: Convert to fraction form
    423,501.93/635,118.02 = 139,126.47/x
  3. Step 3: Cross multiply
    423,501.93x = 635,118.02 × 139,126.47
  4. Step 4: Simplify right side
    423,501.93x = 88,361,724,284.77
  5. Step 5: Solve for x
    x = 88,361,724,284.77/423,501.93
  6. Step 6: Final answer
    x = 208,645.39

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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.