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Finding the Fourth Proportional to 275,424.60, 413,136.90 and 191,006.40

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Solution

The fourth proportional to 275,424.60, 413,136.90 and 191,006.40 is: 286,509.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,424.60 : 413,136.90 = 191,006.40 : x
  2. Step 2: Convert to fraction form
    275,424.60/413,136.90 = 191,006.40/x
  3. Step 3: Cross multiply
    275,424.60x = 413,136.90 × 191,006.40
  4. Step 4: Simplify right side
    275,424.60x = 78,911,791,976.16
  5. Step 5: Solve for x
    x = 78,911,791,976.16/275,424.60
  6. Step 6: Final answer
    x = 286,509.60

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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.