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Finding the Fourth Proportional to 434,428.80, 651,837.60 and 197,649.60

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Solution

The fourth proportional to 434,428.80, 651,837.60 and 197,649.60 is: 296,562.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,428.80 : 651,837.60 = 197,649.60 : x
  2. Step 2: Convert to fraction form
    434,428.80/651,837.60 = 197,649.60/x
  3. Step 3: Cross multiply
    434,428.80x = 651,837.60 × 197,649.60
  4. Step 4: Simplify right side
    434,428.80x = 128,835,440,904.96
  5. Step 5: Solve for x
    x = 128,835,440,904.96/434,428.80
  6. Step 6: Final answer
    x = 296,562.85

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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.