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Finding the Fourth Proportional to 554,342.40, 765,158.40 and 353,203.20

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Solution

The fourth proportional to 554,342.40, 765,158.40 and 353,203.20 is: 487,526.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,342.40 : 765,158.40 = 353,203.20 : x
  2. Step 2: Convert to fraction form
    554,342.40/765,158.40 = 353,203.20/x
  3. Step 3: Cross multiply
    554,342.40x = 765,158.40 × 353,203.20
  4. Step 4: Simplify right side
    554,342.40x = 270,256,395,386.88
  5. Step 5: Solve for x
    x = 270,256,395,386.88/554,342.40
  6. Step 6: Final answer
    x = 487,526.11

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.