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Finding the Fourth Proportional to 388,267.92, 581,655.36 and 238,070.16

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Solution

The fourth proportional to 388,267.92, 581,655.36 and 238,070.16 is: 356,647.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,267.92 : 581,655.36 = 238,070.16 : x
  2. Step 2: Convert to fraction form
    388,267.92/581,655.36 = 238,070.16/x
  3. Step 3: Cross multiply
    388,267.92x = 581,655.36 × 238,070.16
  4. Step 4: Simplify right side
    388,267.92x = 138,474,784,620.06
  5. Step 5: Solve for x
    x = 138,474,784,620.06/388,267.92
  6. Step 6: Final answer
    x = 356,647.50

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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.