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Finding the Fourth Proportional to 289,648.10, 434,472.15 and 89,966.90

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Solution

The fourth proportional to 289,648.10, 434,472.15 and 89,966.90 is: 134,950.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,648.10 : 434,472.15 = 89,966.90 : x
  2. Step 2: Convert to fraction form
    289,648.10/434,472.15 = 89,966.90/x
  3. Step 3: Cross multiply
    289,648.10x = 434,472.15 × 89,966.90
  4. Step 4: Simplify right side
    289,648.10x = 39,088,112,471.84
  5. Step 5: Solve for x
    x = 39,088,112,471.84/289,648.10
  6. Step 6: Final answer
    x = 134,950.35

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Similar ratio
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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.