Home / 345,705.37-518,530.31-117,981.51

Finding the Fourth Proportional to 345,705.37, 518,530.31 and 117,981.51

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Solution

The fourth proportional to 345,705.37, 518,530.31 and 117,981.51 is: 176,962.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,705.37 : 518,530.31 = 117,981.51 : x
  2. Step 2: Convert to fraction form
    345,705.37/518,530.31 = 117,981.51/x
  3. Step 3: Cross multiply
    345,705.37x = 518,530.31 × 117,981.51
  4. Step 4: Simplify right side
    345,705.37x = 61,176,989,779.34
  5. Step 5: Solve for x
    x = 61,176,989,779.34/345,705.37
  6. Step 6: Final answer
    x = 176,962.80

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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.