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Finding the Fourth Proportional to 385,989.32, 532,603.26 and 242,647.88

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Solution

The fourth proportional to 385,989.32, 532,603.26 and 242,647.88 is: 334,815.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,989.32 : 532,603.26 = 242,647.88 : x
  2. Step 2: Convert to fraction form
    385,989.32/532,603.26 = 242,647.88/x
  3. Step 3: Cross multiply
    385,989.32x = 532,603.26 × 242,647.88
  4. Step 4: Simplify right side
    385,989.32x = 129,235,051,920.09
  5. Step 5: Solve for x
    x = 129,235,051,920.09/385,989.32
  6. Step 6: Final answer
    x = 334,815.10

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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.