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Finding the Fourth Proportional to 579,862.40, 869,102.40 and 242,902.40

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Solution

The fourth proportional to 579,862.40, 869,102.40 and 242,902.40 is: 364,064.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    579,862.40 : 869,102.40 = 242,902.40 : x
  2. Step 2: Convert to fraction form
    579,862.40/869,102.40 = 242,902.40/x
  3. Step 3: Cross multiply
    579,862.40x = 869,102.40 × 242,902.40
  4. Step 4: Simplify right side
    579,862.40x = 211,107,058,805.76
  5. Step 5: Solve for x
    x = 211,107,058,805.76/579,862.40
  6. Step 6: Final answer
    x = 364,064.06

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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.