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Finding the Fourth Proportional to 401,530.84, 554,158.87 and 240,385.79

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Solution

The fourth proportional to 401,530.84, 554,158.87 and 240,385.79 is: 331,760.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,530.84 : 554,158.87 = 240,385.79 : x
  2. Step 2: Convert to fraction form
    401,530.84/554,158.87 = 240,385.79/x
  3. Step 3: Cross multiply
    401,530.84x = 554,158.87 × 240,385.79
  4. Step 4: Simplify right side
    401,530.84x = 133,211,918,534.89
  5. Step 5: Solve for x
    x = 133,211,918,534.89/401,530.84
  6. Step 6: Final answer
    x = 331,760.12

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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.