Home / 280,136.17-386,590.71-152,814.43

Finding the Fourth Proportional to 280,136.17, 386,590.71 and 152,814.43

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Solution

The fourth proportional to 280,136.17, 386,590.71 and 152,814.43 is: 210,885.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,136.17 : 386,590.71 = 152,814.43 : x
  2. Step 2: Convert to fraction form
    280,136.17/386,590.71 = 152,814.43/x
  3. Step 3: Cross multiply
    280,136.17x = 386,590.71 × 152,814.43
  4. Step 4: Simplify right side
    280,136.17x = 59,076,638,991.95
  5. Step 5: Solve for x
    x = 59,076,638,991.95/280,136.17
  6. Step 6: Final answer
    x = 210,885.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.