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Finding the Fourth Proportional to 287,935.59, 431,718.42 and 119,572.11

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Solution

The fourth proportional to 287,935.59, 431,718.42 and 119,572.11 is: 179,281.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    287,935.59 : 431,718.42 = 119,572.11 : x
  2. Step 2: Convert to fraction form
    287,935.59/431,718.42 = 119,572.11/x
  3. Step 3: Cross multiply
    287,935.59x = 431,718.42 × 119,572.11
  4. Step 4: Simplify right side
    287,935.59x = 51,621,482,405.27
  5. Step 5: Solve for x
    x = 51,621,482,405.27/287,935.59
  6. Step 6: Final answer
    x = 179,281.35

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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.