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Finding the Fourth Proportional to 359,031.48, 538,639.49 and 134,395.15

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Solution

The fourth proportional to 359,031.48, 538,639.49 and 134,395.15 is: 201,627.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    359,031.48 : 538,639.49 = 134,395.15 : x
  2. Step 2: Convert to fraction form
    359,031.48/538,639.49 = 134,395.15/x
  3. Step 3: Cross multiply
    359,031.48x = 538,639.49 × 134,395.15
  4. Step 4: Simplify right side
    359,031.48x = 72,390,534,043.86
  5. Step 5: Solve for x
    x = 72,390,534,043.86/359,031.48
  6. Step 6: Final answer
    x = 201,627.26

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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.