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Finding the Fourth Proportional to 439,392.60, 606,289.86 and 258,066

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Solution

The fourth proportional to 439,392.60, 606,289.86 and 258,066 is: 356,088.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,392.60 : 606,289.86 = 258,066 : x
  2. Step 2: Convert to fraction form
    439,392.60/606,289.86 = 258,066/x
  3. Step 3: Cross multiply
    439,392.60x = 606,289.86 × 258,066
  4. Step 4: Simplify right side
    439,392.60x = 156,462,799,010.76
  5. Step 5: Solve for x
    x = 156,462,799,010.76/439,392.60
  6. Step 6: Final answer
    x = 356,088.83

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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.