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Finding the Fourth Proportional to 285,454.85, 393,028.95 and 242,349.08

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Solution

The fourth proportional to 285,454.85, 393,028.95 and 242,349.08 is: 333,678.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,454.85 : 393,028.95 = 242,349.08 : x
  2. Step 2: Convert to fraction form
    285,454.85/393,028.95 = 242,349.08/x
  3. Step 3: Cross multiply
    285,454.85x = 393,028.95 × 242,349.08
  4. Step 4: Simplify right side
    285,454.85x = 95,250,204,445.87
  5. Step 5: Solve for x
    x = 95,250,204,445.87/285,454.85
  6. Step 6: Final answer
    x = 333,678.70

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1.5x scale

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.