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Finding the Fourth Proportional to 249,019.70, 373,532.88 and 78,235.88

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Solution

The fourth proportional to 249,019.70, 373,532.88 and 78,235.88 is: 117,354.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    249,019.70 : 373,532.88 = 78,235.88 : x
  2. Step 2: Convert to fraction form
    249,019.70/373,532.88 = 78,235.88/x
  3. Step 3: Cross multiply
    249,019.70x = 373,532.88 × 78,235.88
  4. Step 4: Simplify right side
    249,019.70x = 29,223,673,575.73
  5. Step 5: Solve for x
    x = 29,223,673,575.73/249,019.70
  6. Step 6: Final answer
    x = 117,354.87

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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.