Home / 354,869.40-489,721.02-193,728.04

Finding the Fourth Proportional to 354,869.40, 489,721.02 and 193,728.04

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Solution

The fourth proportional to 354,869.40, 489,721.02 and 193,728.04 is: 267,345.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,869.40 : 489,721.02 = 193,728.04 : x
  2. Step 2: Convert to fraction form
    354,869.40/489,721.02 = 193,728.04/x
  3. Step 3: Cross multiply
    354,869.40x = 489,721.02 × 193,728.04
  4. Step 4: Simplify right side
    354,869.40x = 94,872,693,351.40
  5. Step 5: Solve for x
    x = 94,872,693,351.40/354,869.40
  6. Step 6: Final answer
    x = 267,345.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.