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Finding the Fourth Proportional to 288,045.60, 432,586.80 and 278,714.40

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Solution

The fourth proportional to 288,045.60, 432,586.80 and 278,714.40 is: 418,573.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,045.60 : 432,586.80 = 278,714.40 : x
  2. Step 2: Convert to fraction form
    288,045.60/432,586.80 = 278,714.40/x
  3. Step 3: Cross multiply
    288,045.60x = 432,586.80 × 278,714.40
  4. Step 4: Simplify right side
    288,045.60x = 120,568,170,409.92
  5. Step 5: Solve for x
    x = 120,568,170,409.92/288,045.60
  6. Step 6: Final answer
    x = 418,573.21

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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.