Home / 322,403.92-445,134.40-288,306.16

Finding the Fourth Proportional to 322,403.92, 445,134.40 and 288,306.16

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Solution

The fourth proportional to 322,403.92, 445,134.40 and 288,306.16 is: 398,056.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    322,403.92 : 445,134.40 = 288,306.16 : x
  2. Step 2: Convert to fraction form
    322,403.92/445,134.40 = 288,306.16/x
  3. Step 3: Cross multiply
    322,403.92x = 445,134.40 × 288,306.16
  4. Step 4: Simplify right side
    322,403.92x = 128,334,989,547.90
  5. Step 5: Solve for x
    x = 128,334,989,547.90/322,403.92
  6. Step 6: Final answer
    x = 398,056.54

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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.