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Finding the Fourth Proportional to 216,527.58, 298,802.79 and 121,045.50

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Solution

The fourth proportional to 216,527.58, 298,802.79 and 121,045.50 is: 167,039.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,527.58 : 298,802.79 = 121,045.50 : x
  2. Step 2: Convert to fraction form
    216,527.58/298,802.79 = 121,045.50/x
  3. Step 3: Cross multiply
    216,527.58x = 298,802.79 × 121,045.50
  4. Step 4: Simplify right side
    216,527.58x = 36,168,733,116.95
  5. Step 5: Solve for x
    x = 36,168,733,116.95/216,527.58
  6. Step 6: Final answer
    x = 167,039.84

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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.