Home / 439,440.15-606,432.15-258,159.72

Finding the Fourth Proportional to 439,440.15, 606,432.15 and 258,159.72

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Solution

The fourth proportional to 439,440.15, 606,432.15 and 258,159.72 is: 356,263.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,440.15 : 606,432.15 = 258,159.72 : x
  2. Step 2: Convert to fraction form
    439,440.15/606,432.15 = 258,159.72/x
  3. Step 3: Cross multiply
    439,440.15x = 606,432.15 × 258,159.72
  4. Step 4: Simplify right side
    439,440.15x = 156,556,351,010.84
  5. Step 5: Solve for x
    x = 156,556,351,010.84/439,440.15
  6. Step 6: Final answer
    x = 356,263.20

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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.