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Finding the Fourth Proportional to 391,566.30, 587,349.45 and 298,254.30

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Solution

The fourth proportional to 391,566.30, 587,349.45 and 298,254.30 is: 447,381.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,566.30 : 587,349.45 = 298,254.30 : x
  2. Step 2: Convert to fraction form
    391,566.30/587,349.45 = 298,254.30/x
  3. Step 3: Cross multiply
    391,566.30x = 587,349.45 × 298,254.30
  4. Step 4: Simplify right side
    391,566.30x = 175,179,499,065.14
  5. Step 5: Solve for x
    x = 175,179,499,065.14/391,566.30
  6. Step 6: Final answer
    x = 447,381.45

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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.