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Finding the Fourth Proportional to 302,613.60, 453,920.40 and 255,374.40

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Solution

The fourth proportional to 302,613.60, 453,920.40 and 255,374.40 is: 383,061.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,613.60 : 453,920.40 = 255,374.40 : x
  2. Step 2: Convert to fraction form
    302,613.60/453,920.40 = 255,374.40/x
  3. Step 3: Cross multiply
    302,613.60x = 453,920.40 × 255,374.40
  4. Step 4: Simplify right side
    302,613.60x = 115,919,649,797.76
  5. Step 5: Solve for x
    x = 115,919,649,797.76/302,613.60
  6. Step 6: Final answer
    x = 383,061.60

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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.