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Finding the Fourth Proportional to 217,560.61, 300,252.65 and 126,945.77

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Solution

The fourth proportional to 217,560.61, 300,252.65 and 126,945.77 is: 175,196.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,560.61 : 300,252.65 = 126,945.77 : x
  2. Step 2: Convert to fraction form
    217,560.61/300,252.65 = 126,945.77/x
  3. Step 3: Cross multiply
    217,560.61x = 300,252.65 × 126,945.77
  4. Step 4: Simplify right side
    217,560.61x = 38,115,803,848.79
  5. Step 5: Solve for x
    x = 38,115,803,848.79/217,560.61
  6. Step 6: Final answer
    x = 175,196.25

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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.