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Finding the Fourth Proportional to 289,003.40, 432,890.70 and 189,470.60

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Solution

The fourth proportional to 289,003.40, 432,890.70 and 189,470.60 is: 283,803.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,003.40 : 432,890.70 = 189,470.60 : x
  2. Step 2: Convert to fraction form
    289,003.40/432,890.70 = 189,470.60/x
  3. Step 3: Cross multiply
    289,003.40x = 432,890.70 × 189,470.60
  4. Step 4: Simplify right side
    289,003.40x = 82,020,060,663.42
  5. Step 5: Solve for x
    x = 82,020,060,663.42/289,003.40
  6. Step 6: Final answer
    x = 283,803.10

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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.