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Finding the Fourth Proportional to 359,152.80, 538,802.10 and 122,519.40

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Solution

The fourth proportional to 359,152.80, 538,802.10 and 122,519.40 is: 183,803.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,152.80 : 538,802.10 = 122,519.40 : x
  2. Step 2: Convert to fraction form
    359,152.80/538,802.10 = 122,519.40/x
  3. Step 3: Cross multiply
    359,152.80x = 538,802.10 × 122,519.40
  4. Step 4: Simplify right side
    359,152.80x = 66,013,710,010.74
  5. Step 5: Solve for x
    x = 66,013,710,010.74/359,152.80
  6. Step 6: Final answer
    x = 183,803.97

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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.