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Finding the Fourth Proportional to 368,809.70, 553,214.55 and 254,648.30

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Solution

The fourth proportional to 368,809.70, 553,214.55 and 254,648.30 is: 381,972.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,809.70 : 553,214.55 = 254,648.30 : x
  2. Step 2: Convert to fraction form
    368,809.70/553,214.55 = 254,648.30/x
  3. Step 3: Cross multiply
    368,809.70x = 553,214.55 × 254,648.30
  4. Step 4: Simplify right side
    368,809.70x = 140,875,144,692.77
  5. Step 5: Solve for x
    x = 140,875,144,692.77/368,809.70
  6. Step 6: Final answer
    x = 381,972.45

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Similar ratio
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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.