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Finding the Fourth Proportional to 347,345.20, 521,552.40 and 189,881.20

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Solution

The fourth proportional to 347,345.20, 521,552.40 and 189,881.20 is: 285,114.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    347,345.20 : 521,552.40 = 189,881.20 : x
  2. Step 2: Convert to fraction form
    347,345.20/521,552.40 = 189,881.20/x
  3. Step 3: Cross multiply
    347,345.20x = 521,552.40 × 189,881.20
  4. Step 4: Simplify right side
    347,345.20x = 99,032,995,574.88
  5. Step 5: Solve for x
    x = 99,032,995,574.88/347,345.20
  6. Step 6: Final answer
    x = 285,114.05

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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.