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Finding the Fourth Proportional to 442,308.80, 610,382.95 and 251,322.21

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Solution

The fourth proportional to 442,308.80, 610,382.95 and 251,322.21 is: 346,822.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,308.80 : 610,382.95 = 251,322.21 : x
  2. Step 2: Convert to fraction form
    442,308.80/610,382.95 = 251,322.21/x
  3. Step 3: Cross multiply
    442,308.80x = 610,382.95 × 251,322.21
  4. Step 4: Simplify right side
    442,308.80x = 153,402,791,312.01
  5. Step 5: Solve for x
    x = 153,402,791,312.01/442,308.80
  6. Step 6: Final answer
    x = 346,822.83

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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.