Home / 389,356.75-537,312.32-210,508.75

Finding the Fourth Proportional to 389,356.75, 537,312.32 and 210,508.75

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Solution

The fourth proportional to 389,356.75, 537,312.32 and 210,508.75 is: 290,502.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    389,356.75 : 537,312.32 = 210,508.75 : x
  2. Step 2: Convert to fraction form
    389,356.75/537,312.32 = 210,508.75/x
  3. Step 3: Cross multiply
    389,356.75x = 537,312.32 × 210,508.75
  4. Step 4: Simplify right side
    389,356.75x = 113,108,944,842.80
  5. Step 5: Solve for x
    x = 113,108,944,842.80/389,356.75
  6. Step 6: Final answer
    x = 290,502.08

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.