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Finding the Fourth Proportional to 359,684.40, 539,328.21 and 146,397.57

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Solution

The fourth proportional to 359,684.40, 539,328.21 and 146,397.57 is: 219,515.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,684.40 : 539,328.21 = 146,397.57 : x
  2. Step 2: Convert to fraction form
    359,684.40/539,328.21 = 146,397.57/x
  3. Step 3: Cross multiply
    359,684.40x = 539,328.21 × 146,397.57
  4. Step 4: Simplify right side
    359,684.40x = 78,956,339,376.45
  5. Step 5: Solve for x
    x = 78,956,339,376.45/359,684.40
  6. Step 6: Final answer
    x = 219,515.61

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1.5x scale

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.