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Finding the Fourth Proportional to 455,300.80, 683,534.40 and 242,238.40

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Solution

The fourth proportional to 455,300.80, 683,534.40 and 242,238.40 is: 363,667.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,300.80 : 683,534.40 = 242,238.40 : x
  2. Step 2: Convert to fraction form
    455,300.80/683,534.40 = 242,238.40/x
  3. Step 3: Cross multiply
    455,300.80x = 683,534.40 × 242,238.40
  4. Step 4: Simplify right side
    455,300.80x = 165,578,279,400.96
  5. Step 5: Solve for x
    x = 165,578,279,400.96/455,300.80
  6. Step 6: Final answer
    x = 363,667.89

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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.