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Finding the Fourth Proportional to 442,400.80, 610,486.80 and 251,387.68

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Solution

The fourth proportional to 442,400.80, 610,486.80 and 251,387.68 is: 346,900.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,400.80 : 610,486.80 = 251,387.68 : x
  2. Step 2: Convert to fraction form
    442,400.80/610,486.80 = 251,387.68/x
  3. Step 3: Cross multiply
    442,400.80x = 610,486.80 × 251,387.68
  4. Step 4: Simplify right side
    442,400.80x = 153,468,860,322.62
  5. Step 5: Solve for x
    x = 153,468,860,322.62/442,400.80
  6. Step 6: Final answer
    x = 346,900.05

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1.5x scale

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.