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Finding the Fourth Proportional to 578,567.79, 867,908.79 and 199,438.61

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Solution

The fourth proportional to 578,567.79, 867,908.79 and 199,438.61 is: 299,177.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    578,567.79 : 867,908.79 = 199,438.61 : x
  2. Step 2: Convert to fraction form
    578,567.79/867,908.79 = 199,438.61/x
  3. Step 3: Cross multiply
    578,567.79x = 867,908.79 × 199,438.61
  4. Step 4: Simplify right side
    578,567.79x = 173,094,525,667.82
  5. Step 5: Solve for x
    x = 173,094,525,667.82/578,567.79
  6. Step 6: Final answer
    x = 299,177.60

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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.