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Finding the Fourth Proportional to 191,507.69, 287,281.20 and 73,278.47

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Solution

The fourth proportional to 191,507.69, 287,281.20 and 73,278.47 is: 109,925.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,507.69 : 287,281.20 = 73,278.47 : x
  2. Step 2: Convert to fraction form
    191,507.69/287,281.20 = 73,278.47/x
  3. Step 3: Cross multiply
    191,507.69x = 287,281.20 × 73,278.47
  4. Step 4: Simplify right side
    191,507.69x = 21,051,526,795.76
  5. Step 5: Solve for x
    x = 21,051,526,795.76/191,507.69
  6. Step 6: Final answer
    x = 109,925.23

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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.