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Finding the Fourth Proportional to 407,565.70, 611,105.55 and 249,907.30

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Solution

The fourth proportional to 407,565.70, 611,105.55 and 249,907.30 is: 374,711.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,565.70 : 611,105.55 = 249,907.30 : x
  2. Step 2: Convert to fraction form
    407,565.70/611,105.55 = 249,907.30/x
  3. Step 3: Cross multiply
    407,565.70x = 611,105.55 × 249,907.30
  4. Step 4: Simplify right side
    407,565.70x = 152,719,738,015.52
  5. Step 5: Solve for x
    x = 152,719,738,015.52/407,565.70
  6. Step 6: Final answer
    x = 374,711.95

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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.