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Finding the Fourth Proportional to 278,662.42, 384,713.55 and 183,445.91

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Solution

The fourth proportional to 278,662.42, 384,713.55 and 183,445.91 is: 253,260.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,662.42 : 384,713.55 = 183,445.91 : x
  2. Step 2: Convert to fraction form
    278,662.42/384,713.55 = 183,445.91/x
  3. Step 3: Cross multiply
    278,662.42x = 384,713.55 × 183,445.91
  4. Step 4: Simplify right side
    278,662.42x = 70,574,127,269.08
  5. Step 5: Solve for x
    x = 70,574,127,269.08/278,662.42
  6. Step 6: Final answer
    x = 253,260.30

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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.