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Finding the Fourth Proportional to 424,130.72, 636,403.60 and 199,513.82

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Solution

The fourth proportional to 424,130.72, 636,403.60 and 199,513.82 is: 299,368.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,130.72 : 636,403.60 = 199,513.82 : x
  2. Step 2: Convert to fraction form
    424,130.72/636,403.60 = 199,513.82/x
  3. Step 3: Cross multiply
    424,130.72x = 636,403.60 × 199,513.82
  4. Step 4: Simplify right side
    424,130.72x = 126,971,313,297.75
  5. Step 5: Solve for x
    x = 126,971,313,297.75/424,130.72
  6. Step 6: Final answer
    x = 299,368.35

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1.5x scale

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.