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Finding the Fourth Proportional to 368,464.80, 553,280.40 and 279,818.40

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Solution

The fourth proportional to 368,464.80, 553,280.40 and 279,818.40 is: 420,170.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,464.80 : 553,280.40 = 279,818.40 : x
  2. Step 2: Convert to fraction form
    368,464.80/553,280.40 = 279,818.40/x
  3. Step 3: Cross multiply
    368,464.80x = 553,280.40 × 279,818.40
  4. Step 4: Simplify right side
    368,464.80x = 154,818,036,279.36
  5. Step 5: Solve for x
    x = 154,818,036,279.36/368,464.80
  6. Step 6: Final answer
    x = 420,170.49

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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.