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Finding the Fourth Proportional to 424,283.40, 636,347.34 and 171,550.44

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Solution

The fourth proportional to 424,283.40, 636,347.34 and 171,550.44 is: 257,294.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,283.40 : 636,347.34 = 171,550.44 : x
  2. Step 2: Convert to fraction form
    424,283.40/636,347.34 = 171,550.44/x
  3. Step 3: Cross multiply
    424,283.40x = 636,347.34 × 171,550.44
  4. Step 4: Simplify right side
    424,283.40x = 109,165,666,169.83
  5. Step 5: Solve for x
    x = 109,165,666,169.83/424,283.40
  6. Step 6: Final answer
    x = 257,294.22

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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.