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Finding the Fourth Proportional to 458,833.70, 688,250.55 and 299,401.40

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Solution

The fourth proportional to 458,833.70, 688,250.55 and 299,401.40 is: 449,102.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,833.70 : 688,250.55 = 299,401.40 : x
  2. Step 2: Convert to fraction form
    458,833.70/688,250.55 = 299,401.40/x
  3. Step 3: Cross multiply
    458,833.70x = 688,250.55 × 299,401.40
  4. Step 4: Simplify right side
    458,833.70x = 206,063,178,220.77
  5. Step 5: Solve for x
    x = 206,063,178,220.77/458,833.70
  6. Step 6: Final answer
    x = 449,102.10

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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.