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Finding the Fourth Proportional to 398,500.76, 549,994.38 and 245,628.92

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Solution

The fourth proportional to 398,500.76, 549,994.38 and 245,628.92 is: 339,006.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,500.76 : 549,994.38 = 245,628.92 : x
  2. Step 2: Convert to fraction form
    398,500.76/549,994.38 = 245,628.92/x
  3. Step 3: Cross multiply
    398,500.76x = 549,994.38 × 245,628.92
  4. Step 4: Simplify right side
    398,500.76x = 135,094,525,565.47
  5. Step 5: Solve for x
    x = 135,094,525,565.47/398,500.76
  6. Step 6: Final answer
    x = 339,006.95

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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.