Home / 345,507.64-518,335.27-120,875.40

Finding the Fourth Proportional to 345,507.64, 518,335.27 and 120,875.40

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Solution

The fourth proportional to 345,507.64, 518,335.27 and 120,875.40 is: 181,338.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,507.64 : 518,335.27 = 120,875.40 : x
  2. Step 2: Convert to fraction form
    345,507.64/518,335.27 = 120,875.40/x
  3. Step 3: Cross multiply
    345,507.64x = 518,335.27 × 120,875.40
  4. Step 4: Simplify right side
    345,507.64x = 62,653,985,990.78
  5. Step 5: Solve for x
    x = 62,653,985,990.78/345,507.64
  6. Step 6: Final answer
    x = 181,338.93

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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.