Home / 434,428.80-651,643.20-221,852.40

Finding the Fourth Proportional to 434,428.80, 651,643.20 and 221,852.40

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Solution

The fourth proportional to 434,428.80, 651,643.20 and 221,852.40 is: 332,778.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    434,428.80 : 651,643.20 = 221,852.40 : x
  2. Step 2: Convert to fraction form
    434,428.80/651,643.20 = 221,852.40/x
  3. Step 3: Cross multiply
    434,428.80x = 651,643.20 × 221,852.40
  4. Step 4: Simplify right side
    434,428.80x = 144,568,607,863.68
  5. Step 5: Solve for x
    x = 144,568,607,863.68/434,428.80
  6. Step 6: Final answer
    x = 332,778.60

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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.