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Finding the Fourth Proportional to 359,146.20, 538,643.70 and 181,486.20

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Solution

The fourth proportional to 359,146.20, 538,643.70 and 181,486.20 is: 272,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,146.20 : 538,643.70 = 181,486.20 : x
  2. Step 2: Convert to fraction form
    359,146.20/538,643.70 = 181,486.20/x
  3. Step 3: Cross multiply
    359,146.20x = 538,643.70 × 181,486.20
  4. Step 4: Simplify right side
    359,146.20x = 97,756,398,266.94
  5. Step 5: Solve for x
    x = 97,756,398,266.94/359,146.20
  6. Step 6: Final answer
    x = 272,191.10

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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.