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Finding the Fourth Proportional to 303,483.78, 418,830.21 and 176,178.78

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Solution

The fourth proportional to 303,483.78, 418,830.21 and 176,178.78 is: 243,139.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    303,483.78 : 418,830.21 = 176,178.78 : x
  2. Step 2: Convert to fraction form
    303,483.78/418,830.21 = 176,178.78/x
  3. Step 3: Cross multiply
    303,483.78x = 418,830.21 × 176,178.78
  4. Step 4: Simplify right side
    303,483.78x = 73,788,995,424.94
  5. Step 5: Solve for x
    x = 73,788,995,424.94/303,483.78
  6. Step 6: Final answer
    x = 243,139.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.