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Finding the Fourth Proportional to 391,509.36, 587,267.51 and 154,852.02

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Solution

The fourth proportional to 391,509.36, 587,267.51 and 154,852.02 is: 232,279.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,509.36 : 587,267.51 = 154,852.02 : x
  2. Step 2: Convert to fraction form
    391,509.36/587,267.51 = 154,852.02/x
  3. Step 3: Cross multiply
    391,509.36x = 587,267.51 × 154,852.02
  4. Step 4: Simplify right side
    391,509.36x = 90,939,559,429.61
  5. Step 5: Solve for x
    x = 90,939,559,429.61/391,509.36
  6. Step 6: Final answer
    x = 232,279.40

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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.