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Finding the Fourth Proportional to 586,727.80, 880,437.30 and 212,702.20

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Solution

The fourth proportional to 586,727.80, 880,437.30 and 212,702.20 is: 319,178.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    586,727.80 : 880,437.30 = 212,702.20 : x
  2. Step 2: Convert to fraction form
    586,727.80/880,437.30 = 212,702.20/x
  3. Step 3: Cross multiply
    586,727.80x = 880,437.30 × 212,702.20
  4. Step 4: Simplify right side
    586,727.80x = 187,270,950,672.06
  5. Step 5: Solve for x
    x = 187,270,950,672.06/586,727.80
  6. Step 6: Final answer
    x = 319,178.59

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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.