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Finding the Fourth Proportional to 402,065.40, 603,054.90 and 106,577.40

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Solution

The fourth proportional to 402,065.40, 603,054.90 and 106,577.40 is: 159,854.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,065.40 : 603,054.90 = 106,577.40 : x
  2. Step 2: Convert to fraction form
    402,065.40/603,054.90 = 106,577.40/x
  3. Step 3: Cross multiply
    402,065.40x = 603,054.90 × 106,577.40
  4. Step 4: Simplify right side
    402,065.40x = 64,272,023,299.26
  5. Step 5: Solve for x
    x = 64,272,023,299.26/402,065.40
  6. Step 6: Final answer
    x = 159,854.65

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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.