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Finding the Fourth Proportional to 380,570.71, 570,909.39 and 155,963.11

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Solution

The fourth proportional to 380,570.71, 570,909.39 and 155,963.11 is: 233,966.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,570.71 : 570,909.39 = 155,963.11 : x
  2. Step 2: Convert to fraction form
    380,570.71/570,909.39 = 155,963.11/x
  3. Step 3: Cross multiply
    380,570.71x = 570,909.39 × 155,963.11
  4. Step 4: Simplify right side
    380,570.71x = 89,040,803,992.60
  5. Step 5: Solve for x
    x = 89,040,803,992.60/380,570.71
  6. Step 6: Final answer
    x = 233,966.52

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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.