Home / 371,781.45-513,104.91-210,688.40

Finding the Fourth Proportional to 371,781.45, 513,104.91 and 210,688.40

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Solution

The fourth proportional to 371,781.45, 513,104.91 and 210,688.40 is: 290,776.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    371,781.45 : 513,104.91 = 210,688.40 : x
  2. Step 2: Convert to fraction form
    371,781.45/513,104.91 = 210,688.40/x
  3. Step 3: Cross multiply
    371,781.45x = 513,104.91 × 210,688.40
  4. Step 4: Simplify right side
    371,781.45x = 108,105,252,520.04
  5. Step 5: Solve for x
    x = 108,105,252,520.04/371,781.45
  6. Step 6: Final answer
    x = 290,776.35

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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.