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Finding the Fourth Proportional to 345,449.34, 518,324.73 and 120,970.89

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Solution

The fourth proportional to 345,449.34, 518,324.73 and 120,970.89 is: 181,509.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,449.34 : 518,324.73 = 120,970.89 : x
  2. Step 2: Convert to fraction form
    345,449.34/518,324.73 = 120,970.89/x
  3. Step 3: Cross multiply
    345,449.34x = 518,324.73 × 120,970.89
  4. Step 4: Simplify right side
    345,449.34x = 62,702,203,897.11
  5. Step 5: Solve for x
    x = 62,702,203,897.11/345,449.34
  6. Step 6: Final answer
    x = 181,509.11

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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.