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Finding the Fourth Proportional to 216,866.01, 299,275.05 and 121,372.70

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Solution

The fourth proportional to 216,866.01, 299,275.05 and 121,372.70 is: 167,494.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,866.01 : 299,275.05 = 121,372.70 : x
  2. Step 2: Convert to fraction form
    216,866.01/299,275.05 = 121,372.70/x
  3. Step 3: Cross multiply
    216,866.01x = 299,275.05 × 121,372.70
  4. Step 4: Simplify right side
    216,866.01x = 36,323,819,364.76
  5. Step 5: Solve for x
    x = 36,323,819,364.76/216,866.01
  6. Step 6: Final answer
    x = 167,494.29

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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.