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Finding the Fourth Proportional to 405,248.59, 559,244.80 and 221,490.86

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Solution

The fourth proportional to 405,248.59, 559,244.80 and 221,490.86 is: 305,658.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    405,248.59 : 559,244.80 = 221,490.86 : x
  2. Step 2: Convert to fraction form
    405,248.59/559,244.80 = 221,490.86/x
  3. Step 3: Cross multiply
    405,248.59x = 559,244.80 × 221,490.86
  4. Step 4: Simplify right side
    405,248.59x = 123,867,611,702.53
  5. Step 5: Solve for x
    x = 123,867,611,702.53/405,248.59
  6. Step 6: Final answer
    x = 305,658.34

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1.5x scale

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.