Home / 399,129.35-598,869.32-209,545.66

Finding the Fourth Proportional to 399,129.35, 598,869.32 and 209,545.66

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Solution

The fourth proportional to 399,129.35, 598,869.32 and 209,545.66 is: 314,410.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,129.35 : 598,869.32 = 209,545.66 : x
  2. Step 2: Convert to fraction form
    399,129.35/598,869.32 = 209,545.66/x
  3. Step 3: Cross multiply
    399,129.35x = 598,869.32 × 209,545.66
  4. Step 4: Simplify right side
    399,129.35x = 125,490,464,368.25
  5. Step 5: Solve for x
    x = 125,490,464,368.25/399,129.35
  6. Step 6: Final answer
    x = 314,410.52

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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.