Home / 353,607.06-487,937.79-208,403.40

Finding the Fourth Proportional to 353,607.06, 487,937.79 and 208,403.40

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Solution

The fourth proportional to 353,607.06, 487,937.79 and 208,403.40 is: 287,573.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,607.06 : 487,937.79 = 208,403.40 : x
  2. Step 2: Convert to fraction form
    353,607.06/487,937.79 = 208,403.40/x
  3. Step 3: Cross multiply
    353,607.06x = 487,937.79 × 208,403.40
  4. Step 4: Simplify right side
    353,607.06x = 101,687,894,424.49
  5. Step 5: Solve for x
    x = 101,687,894,424.49/353,607.06
  6. Step 6: Final answer
    x = 287,573.15

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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.