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Finding the Fourth Proportional to 288,119.78, 432,179.76 and 77,757.72

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Solution

The fourth proportional to 288,119.78, 432,179.76 and 77,757.72 is: 116,636.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,119.78 : 432,179.76 = 77,757.72 : x
  2. Step 2: Convert to fraction form
    288,119.78/432,179.76 = 77,757.72/x
  3. Step 3: Cross multiply
    288,119.78x = 432,179.76 × 77,757.72
  4. Step 4: Simplify right side
    288,119.78x = 33,605,312,767.75
  5. Step 5: Solve for x
    x = 33,605,312,767.75/288,119.78
  6. Step 6: Final answer
    x = 116,636.60

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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.