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Finding the Fourth Proportional to 389,585.94, 584,395.56 and 152,979.90

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Solution

The fourth proportional to 389,585.94, 584,395.56 and 152,979.90 is: 229,476.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,585.94 : 584,395.56 = 152,979.90 : x
  2. Step 2: Convert to fraction form
    389,585.94/584,395.56 = 152,979.90/x
  3. Step 3: Cross multiply
    389,585.94x = 584,395.56 × 152,979.90
  4. Step 4: Simplify right side
    389,585.94x = 89,400,774,329.24
  5. Step 5: Solve for x
    x = 89,400,774,329.24/389,585.94
  6. Step 6: Final answer
    x = 229,476.39

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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.