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Finding the Fourth Proportional to 217,852.61, 300,630.59 and 121,053.95

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Solution

The fourth proportional to 217,852.61, 300,630.59 and 121,053.95 is: 167,051.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,852.61 : 300,630.59 = 121,053.95 : x
  2. Step 2: Convert to fraction form
    217,852.61/300,630.59 = 121,053.95/x
  3. Step 3: Cross multiply
    217,852.61x = 300,630.59 × 121,053.95
  4. Step 4: Simplify right side
    217,852.61x = 36,392,518,301.91
  5. Step 5: Solve for x
    x = 36,392,518,301.91/217,852.61
  6. Step 6: Final answer
    x = 167,051.10

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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.