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Finding the Fourth Proportional to 359,584.40, 539,376.60 and 319,494.80

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Solution

The fourth proportional to 359,584.40, 539,376.60 and 319,494.80 is: 479,242.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,584.40 : 539,376.60 = 319,494.80 : x
  2. Step 2: Convert to fraction form
    359,584.40/539,376.60 = 319,494.80/x
  3. Step 3: Cross multiply
    359,584.40x = 539,376.60 × 319,494.80
  4. Step 4: Simplify right side
    359,584.40x = 172,328,018,941.68
  5. Step 5: Solve for x
    x = 172,328,018,941.68/359,584.40
  6. Step 6: Final answer
    x = 479,242.20

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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.