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Finding the Fourth Proportional to 586,589.72, 880,040.10 and 212,667.80

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Solution

The fourth proportional to 586,589.72, 880,040.10 and 212,667.80 is: 319,058.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,589.72 : 880,040.10 = 212,667.80 : x
  2. Step 2: Convert to fraction form
    586,589.72/880,040.10 = 212,667.80/x
  3. Step 3: Cross multiply
    586,589.72x = 880,040.10 × 212,667.80
  4. Step 4: Simplify right side
    586,589.72x = 187,156,191,978.78
  5. Step 5: Solve for x
    x = 187,156,191,978.78/586,589.72
  6. Step 6: Final answer
    x = 319,058.08

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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.