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Finding the Fourth Proportional to 251,312.76, 346,802.40 and 138,134.52

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Solution

The fourth proportional to 251,312.76, 346,802.40 and 138,134.52 is: 190,620.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,312.76 : 346,802.40 = 138,134.52 : x
  2. Step 2: Convert to fraction form
    251,312.76/346,802.40 = 138,134.52/x
  3. Step 3: Cross multiply
    251,312.76x = 346,802.40 × 138,134.52
  4. Step 4: Simplify right side
    251,312.76x = 47,905,383,058.85
  5. Step 5: Solve for x
    x = 47,905,383,058.85/251,312.76
  6. Step 6: Final answer
    x = 190,620.58

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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.