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Finding the Fourth Proportional to 423,756.55, 635,302.50 and 199,001.31

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Solution

The fourth proportional to 423,756.55, 635,302.50 and 199,001.31 is: 298,345.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    423,756.55 : 635,302.50 = 199,001.31 : x
  2. Step 2: Convert to fraction form
    423,756.55/635,302.50 = 199,001.31/x
  3. Step 3: Cross multiply
    423,756.55x = 635,302.50 × 199,001.31
  4. Step 4: Simplify right side
    423,756.55x = 126,426,029,746.28
  5. Step 5: Solve for x
    x = 126,426,029,746.28/423,756.55
  6. Step 6: Final answer
    x = 298,345.90

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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.