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Finding the Fourth Proportional to 191,974.67, 287,737.75 and 144,437.01

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Solution

The fourth proportional to 191,974.67, 287,737.75 and 144,437.01 is: 216,486.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,974.67 : 287,737.75 = 144,437.01 : x
  2. Step 2: Convert to fraction form
    191,974.67/287,737.75 = 144,437.01/x
  3. Step 3: Cross multiply
    191,974.67x = 287,737.75 × 144,437.01
  4. Step 4: Simplify right side
    191,974.67x = 41,559,980,274.13
  5. Step 5: Solve for x
    x = 41,559,980,274.13/191,974.67
  6. Step 6: Final answer
    x = 216,486.79

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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.