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Finding the Fourth Proportional to 380,514.69, 570,771.65 and 155,875.55

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Solution

The fourth proportional to 380,514.69, 570,771.65 and 155,875.55 is: 233,813.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,514.69 : 570,771.65 = 155,875.55 : x
  2. Step 2: Convert to fraction form
    380,514.69/570,771.65 = 155,875.55/x
  3. Step 3: Cross multiply
    380,514.69x = 570,771.65 × 155,875.55
  4. Step 4: Simplify right side
    380,514.69x = 88,969,342,403.99
  5. Step 5: Solve for x
    x = 88,969,342,403.99/380,514.69
  6. Step 6: Final answer
    x = 233,813.16

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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.