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Finding the Fourth Proportional to 380,641.52, 570,971.52 and 127,925.68

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Solution

The fourth proportional to 380,641.52, 570,971.52 and 127,925.68 is: 191,891.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    380,641.52 : 570,971.52 = 127,925.68 : x
  2. Step 2: Convert to fraction form
    380,641.52/570,971.52 = 127,925.68/x
  3. Step 3: Cross multiply
    380,641.52x = 570,971.52 × 127,925.68
  4. Step 4: Simplify right side
    380,641.52x = 73,041,919,956.63
  5. Step 5: Solve for x
    x = 73,041,919,956.63/380,641.52
  6. Step 6: Final answer
    x = 191,891.63

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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.