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Finding the Fourth Proportional to 340,046.40, 508,903.20 and 312,052.80

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Solution

The fourth proportional to 340,046.40, 508,903.20 and 312,052.80 is: 467,008.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,046.40 : 508,903.20 = 312,052.80 : x
  2. Step 2: Convert to fraction form
    340,046.40/508,903.20 = 312,052.80/x
  3. Step 3: Cross multiply
    340,046.40x = 508,903.20 × 312,052.80
  4. Step 4: Simplify right side
    340,046.40x = 158,804,668,488.96
  5. Step 5: Solve for x
    x = 158,804,668,488.96/340,046.40
  6. Step 6: Final answer
    x = 467,008.82

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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.