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Finding the Fourth Proportional to 357,436.68, 492,989.28 and 242,803.70

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Solution

The fourth proportional to 357,436.68, 492,989.28 and 242,803.70 is: 334,883.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    357,436.68 : 492,989.28 = 242,803.70 : x
  2. Step 2: Convert to fraction form
    357,436.68/492,989.28 = 242,803.70/x
  3. Step 3: Cross multiply
    357,436.68x = 492,989.28 × 242,803.70
  4. Step 4: Simplify right side
    357,436.68x = 119,699,621,244.34
  5. Step 5: Solve for x
    x = 119,699,621,244.34/357,436.68
  6. Step 6: Final answer
    x = 334,883.43

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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.