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Finding the Fourth Proportional to 351,695.80, 527,441.30 and 127,030.20

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Solution

The fourth proportional to 351,695.80, 527,441.30 and 127,030.20 is: 190,508.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,695.80 : 527,441.30 = 127,030.20 : x
  2. Step 2: Convert to fraction form
    351,695.80/527,441.30 = 127,030.20/x
  3. Step 3: Cross multiply
    351,695.80x = 527,441.30 × 127,030.20
  4. Step 4: Simplify right side
    351,695.80x = 67,000,973,827.26
  5. Step 5: Solve for x
    x = 67,000,973,827.26/351,695.80
  6. Step 6: Final answer
    x = 190,508.31

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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.