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Finding the Fourth Proportional to 402,855.53, 604,283.29 and 189,490.79

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Solution

The fourth proportional to 402,855.53, 604,283.29 and 189,490.79 is: 284,236.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    402,855.53 : 604,283.29 = 189,490.79 : x
  2. Step 2: Convert to fraction form
    402,855.53/604,283.29 = 189,490.79/x
  3. Step 3: Cross multiply
    402,855.53x = 604,283.29 × 189,490.79
  4. Step 4: Simplify right side
    402,855.53x = 114,506,119,042.88
  5. Step 5: Solve for x
    x = 114,506,119,042.88/402,855.53
  6. Step 6: Final answer
    x = 284,236.19

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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.