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Finding the Fourth Proportional to 539,296.80, 808,957.72 and 139,953.32

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Solution

The fourth proportional to 539,296.80, 808,957.72 and 139,953.32 is: 209,933.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    539,296.80 : 808,957.72 = 139,953.32 : x
  2. Step 2: Convert to fraction form
    539,296.80/808,957.72 = 139,953.32/x
  3. Step 3: Cross multiply
    539,296.80x = 808,957.72 × 139,953.32
  4. Step 4: Simplify right side
    539,296.80x = 113,216,318,653.63
  5. Step 5: Solve for x
    x = 113,216,318,653.63/539,296.80
  6. Step 6: Final answer
    x = 209,933.23

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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.