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Finding the Fourth Proportional to 359,904.40, 539,208.60 and 172,502.80

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Solution

The fourth proportional to 359,904.40, 539,208.60 and 172,502.80 is: 258,443.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,904.40 : 539,208.60 = 172,502.80 : x
  2. Step 2: Convert to fraction form
    359,904.40/539,208.60 = 172,502.80/x
  3. Step 3: Cross multiply
    359,904.40x = 539,208.60 × 172,502.80
  4. Step 4: Simplify right side
    359,904.40x = 93,014,993,284.08
  5. Step 5: Solve for x
    x = 93,014,993,284.08/359,904.40
  6. Step 6: Final answer
    x = 258,443.61

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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.