Home / 280,136.20-386,590.76-152,814.48

Finding the Fourth Proportional to 280,136.20, 386,590.76 and 152,814.48

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Solution

The fourth proportional to 280,136.20, 386,590.76 and 152,814.48 is: 210,885.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,136.20 : 386,590.76 = 152,814.48 : x
  2. Step 2: Convert to fraction form
    280,136.20/386,590.76 = 152,814.48/x
  3. Step 3: Cross multiply
    280,136.20x = 386,590.76 × 152,814.48
  4. Step 4: Simplify right side
    280,136.20x = 59,076,665,962.20
  5. Step 5: Solve for x
    x = 59,076,665,962.20/280,136.20
  6. Step 6: Final answer
    x = 210,885.51

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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.