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Finding the Fourth Proportional to 432,508.45, 648,901.49 and 207,885.18

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Solution

The fourth proportional to 432,508.45, 648,901.49 and 207,885.18 is: 311,894.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    432,508.45 : 648,901.49 = 207,885.18 : x
  2. Step 2: Convert to fraction form
    432,508.45/648,901.49 = 207,885.18/x
  3. Step 3: Cross multiply
    432,508.45x = 648,901.49 × 207,885.18
  4. Step 4: Simplify right side
    432,508.45x = 134,897,003,050.92
  5. Step 5: Solve for x
    x = 134,897,003,050.92/432,508.45
  6. Step 6: Final answer
    x = 311,894.49

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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.