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Finding the Fourth Proportional to 506,012.21, 698,269.43 and 279,643.13

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Solution

The fourth proportional to 506,012.21, 698,269.43 and 279,643.13 is: 385,892.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    506,012.21 : 698,269.43 = 279,643.13 : x
  2. Step 2: Convert to fraction form
    506,012.21/698,269.43 = 279,643.13/x
  3. Step 3: Cross multiply
    506,012.21x = 698,269.43 × 279,643.13
  4. Step 4: Simplify right side
    506,012.21x = 195,266,248,988.52
  5. Step 5: Solve for x
    x = 195,266,248,988.52/506,012.21
  6. Step 6: Final answer
    x = 385,892.37

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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.