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Finding the Fourth Proportional to 423,567.48, 635,346.90 and 108,021

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Solution

The fourth proportional to 423,567.48, 635,346.90 and 108,021 is: 162,030.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,567.48 : 635,346.90 = 108,021 : x
  2. Step 2: Convert to fraction form
    423,567.48/635,346.90 = 108,021/x
  3. Step 3: Cross multiply
    423,567.48x = 635,346.90 × 108,021
  4. Step 4: Simplify right side
    423,567.48x = 68,630,807,484.90
  5. Step 5: Solve for x
    x = 68,630,807,484.90/423,567.48
  6. Step 6: Final answer
    x = 162,030.40

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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.