Home / 345,545.71-518,316.49-89,378.29

Finding the Fourth Proportional to 345,545.71, 518,316.49 and 89,378.29

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Solution

The fourth proportional to 345,545.71, 518,316.49 and 89,378.29 is: 134,066.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,545.71 : 518,316.49 = 89,378.29 : x
  2. Step 2: Convert to fraction form
    345,545.71/518,316.49 = 89,378.29/x
  3. Step 3: Cross multiply
    345,545.71x = 518,316.49 × 89,378.29
  4. Step 4: Simplify right side
    345,545.71x = 46,326,240,035.77
  5. Step 5: Solve for x
    x = 46,326,240,035.77/345,545.71
  6. Step 6: Final answer
    x = 134,066.89

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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.