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Finding the Fourth Proportional to 289,484.98, 434,254.99 and 89,807.54

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Solution

The fourth proportional to 289,484.98, 434,254.99 and 89,807.54 is: 134,719.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,484.98 : 434,254.99 = 89,807.54 : x
  2. Step 2: Convert to fraction form
    289,484.98/434,254.99 = 89,807.54/x
  3. Step 3: Cross multiply
    289,484.98x = 434,254.99 × 89,807.54
  4. Step 4: Simplify right side
    289,484.98x = 38,999,372,384.62
  5. Step 5: Solve for x
    x = 38,999,372,384.62/289,484.98
  6. Step 6: Final answer
    x = 134,719.85

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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.