Home / 308,215.15-462,411.29-128,265.55

Finding the Fourth Proportional to 308,215.15, 462,411.29 and 128,265.55

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Solution

The fourth proportional to 308,215.15, 462,411.29 and 128,265.55 is: 192,435.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,215.15 : 462,411.29 = 128,265.55 : x
  2. Step 2: Convert to fraction form
    308,215.15/462,411.29 = 128,265.55/x
  3. Step 3: Cross multiply
    308,215.15x = 462,411.29 × 128,265.55
  4. Step 4: Simplify right side
    308,215.15x = 59,311,438,438.06
  5. Step 5: Solve for x
    x = 59,311,438,438.06/308,215.15
  6. Step 6: Final answer
    x = 192,435.18

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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.