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Finding the Fourth Proportional to 353,695.25, 487,018.49 and 266,606.88

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Solution

The fourth proportional to 353,695.25, 487,018.49 and 266,606.88 is: 367,102.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,695.25 : 487,018.49 = 266,606.88 : x
  2. Step 2: Convert to fraction form
    353,695.25/487,018.49 = 266,606.88/x
  3. Step 3: Cross multiply
    353,695.25x = 487,018.49 × 266,606.88
  4. Step 4: Simplify right side
    353,695.25x = 129,842,478,788.18
  5. Step 5: Solve for x
    x = 129,842,478,788.18/353,695.25
  6. Step 6: Final answer
    x = 367,102.70

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1.5x scale

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.