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Finding the Fourth Proportional to 537,980.40, 807,076.92 and 158,907.72

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Solution

The fourth proportional to 537,980.40, 807,076.92 and 158,907.72 is: 238,392.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    537,980.40 : 807,076.92 = 158,907.72 : x
  2. Step 2: Convert to fraction form
    537,980.40/807,076.92 = 158,907.72/x
  3. Step 3: Cross multiply
    537,980.40x = 807,076.92 × 158,907.72
  4. Step 4: Simplify right side
    537,980.40x = 128,250,753,221.82
  5. Step 5: Solve for x
    x = 128,250,753,221.82/537,980.40
  6. Step 6: Final answer
    x = 238,392.98

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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.