Home / 352,981.17-487,155.47-209,741.31

Finding the Fourth Proportional to 352,981.17, 487,155.47 and 209,741.31

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Solution

The fourth proportional to 352,981.17, 487,155.47 and 209,741.31 is: 289,467.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,981.17 : 487,155.47 = 209,741.31 : x
  2. Step 2: Convert to fraction form
    352,981.17/487,155.47 = 209,741.31/x
  3. Step 3: Cross multiply
    352,981.17x = 487,155.47 × 209,741.31
  4. Step 4: Simplify right side
    352,981.17x = 102,176,625,402.76
  5. Step 5: Solve for x
    x = 102,176,625,402.76/352,981.17
  6. Step 6: Final answer
    x = 289,467.64

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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.