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Finding the Fourth Proportional to 278,977.60, 418,466.40 and 101,490.40

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Solution

The fourth proportional to 278,977.60, 418,466.40 and 101,490.40 is: 152,235.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    278,977.60 : 418,466.40 = 101,490.40 : x
  2. Step 2: Convert to fraction form
    278,977.60/418,466.40 = 101,490.40/x
  3. Step 3: Cross multiply
    278,977.60x = 418,466.40 × 101,490.40
  4. Step 4: Simplify right side
    278,977.60x = 42,470,322,322.56
  5. Step 5: Solve for x
    x = 42,470,322,322.56/278,977.60
  6. Step 6: Final answer
    x = 152,235.60

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1.5x scale

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.