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Finding the Fourth Proportional to 380,570.76, 570,909.40 and 155,963.08

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Solution

The fourth proportional to 380,570.76, 570,909.40 and 155,963.08 is: 233,966.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,570.76 : 570,909.40 = 155,963.08 : x
  2. Step 2: Convert to fraction form
    380,570.76/570,909.40 = 155,963.08/x
  3. Step 3: Cross multiply
    380,570.76x = 570,909.40 × 155,963.08
  4. Step 4: Simplify right side
    380,570.76x = 89,040,788,424.95
  5. Step 5: Solve for x
    x = 89,040,788,424.95/380,570.76
  6. Step 6: Final answer
    x = 233,966.45

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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.