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Finding the Fourth Proportional to 249,015.69, 373,526.88 and 78,231.87

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Solution

The fourth proportional to 249,015.69, 373,526.88 and 78,231.87 is: 117,348.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,015.69 : 373,526.88 = 78,231.87 : x
  2. Step 2: Convert to fraction form
    249,015.69/373,526.88 = 78,231.87/x
  3. Step 3: Cross multiply
    249,015.69x = 373,526.88 × 78,231.87
  4. Step 4: Simplify right side
    249,015.69x = 29,221,706,317.67
  5. Step 5: Solve for x
    x = 29,221,706,317.67/249,015.69
  6. Step 6: Final answer
    x = 117,348.86

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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.