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Finding the Fourth Proportional to 325,624.20, 487,788.30 and 286,657.80

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Solution

The fourth proportional to 325,624.20, 487,788.30 and 286,657.80 is: 429,416.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,624.20 : 487,788.30 = 286,657.80 : x
  2. Step 2: Convert to fraction form
    325,624.20/487,788.30 = 286,657.80/x
  3. Step 3: Cross multiply
    325,624.20x = 487,788.30 × 286,657.80
  4. Step 4: Simplify right side
    325,624.20x = 139,828,320,943.74
  5. Step 5: Solve for x
    x = 139,828,320,943.74/325,624.20
  6. Step 6: Final answer
    x = 429,416.24

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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.