Home / 434,639.20-651,740.10-257,200.60

Finding the Fourth Proportional to 434,639.20, 651,740.10 and 257,200.60

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Solution

The fourth proportional to 434,639.20, 651,740.10 and 257,200.60 is: 385,671.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,639.20 : 651,740.10 = 257,200.60 : x
  2. Step 2: Convert to fraction form
    434,639.20/651,740.10 = 257,200.60/x
  3. Step 3: Cross multiply
    434,639.20x = 651,740.10 × 257,200.60
  4. Step 4: Simplify right side
    434,639.20x = 167,627,944,764.06
  5. Step 5: Solve for x
    x = 167,627,944,764.06/434,639.20
  6. Step 6: Final answer
    x = 385,671.48

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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.