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Finding the Fourth Proportional to 343,651.47, 515,308.56 and 141,210.90

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Solution

The fourth proportional to 343,651.47, 515,308.56 and 141,210.90 is: 211,747.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,651.47 : 515,308.56 = 141,210.90 : x
  2. Step 2: Convert to fraction form
    343,651.47/515,308.56 = 141,210.90/x
  3. Step 3: Cross multiply
    343,651.47x = 515,308.56 × 141,210.90
  4. Step 4: Simplify right side
    343,651.47x = 72,767,185,535.30
  5. Step 5: Solve for x
    x = 72,767,185,535.30/343,651.47
  6. Step 6: Final answer
    x = 211,747.05

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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.