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Finding the Fourth Proportional to 439,071.30, 657,622.80 and 360,339.30

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Solution

The fourth proportional to 439,071.30, 657,622.80 and 360,339.30 is: 539,701.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    439,071.30 : 657,622.80 = 360,339.30 : x
  2. Step 2: Convert to fraction form
    439,071.30/657,622.80 = 360,339.30/x
  3. Step 3: Cross multiply
    439,071.30x = 657,622.80 × 360,339.30
  4. Step 4: Simplify right side
    439,071.30x = 236,967,339,416.04
  5. Step 5: Solve for x
    x = 236,967,339,416.04/439,071.30
  6. Step 6: Final answer
    x = 539,701.27

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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.