Home / 345,519.89-518,430.42-121,041.35

Finding the Fourth Proportional to 345,519.89, 518,430.42 and 121,041.35

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Solution

The fourth proportional to 345,519.89, 518,430.42 and 121,041.35 is: 181,614.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,519.89 : 518,430.42 = 121,041.35 : x
  2. Step 2: Convert to fraction form
    345,519.89/518,430.42 = 121,041.35/x
  3. Step 3: Cross multiply
    345,519.89x = 518,430.42 × 121,041.35
  4. Step 4: Simplify right side
    345,519.89x = 62,751,515,325.71
  5. Step 5: Solve for x
    x = 62,751,515,325.71/345,519.89
  6. Step 6: Final answer
    x = 181,614.77

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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.