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Finding the Fourth Proportional to 309,200.34, 426,780.45 and 181,916.94

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Solution

The fourth proportional to 309,200.34, 426,780.45 and 181,916.94 is: 251,094.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    309,200.34 : 426,780.45 = 181,916.94 : x
  2. Step 2: Convert to fraction form
    309,200.34/426,780.45 = 181,916.94/x
  3. Step 3: Cross multiply
    309,200.34x = 426,780.45 × 181,916.94
  4. Step 4: Simplify right side
    309,200.34x = 77,638,593,515.82
  5. Step 5: Solve for x
    x = 77,638,593,515.82/309,200.34
  6. Step 6: Final answer
    x = 251,094.79

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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.