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Finding the Fourth Proportional to 359,012.20, 538,518.30 and 109,661.80

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Solution

The fourth proportional to 359,012.20, 538,518.30 and 109,661.80 is: 164,492.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,012.20 : 538,518.30 = 109,661.80 : x
  2. Step 2: Convert to fraction form
    359,012.20/538,518.30 = 109,661.80/x
  3. Step 3: Cross multiply
    359,012.20x = 538,518.30 × 109,661.80
  4. Step 4: Simplify right side
    359,012.20x = 59,054,886,110.94
  5. Step 5: Solve for x
    x = 59,054,886,110.94/359,012.20
  6. Step 6: Final answer
    x = 164,492.70

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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.