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Finding the Fourth Proportional to 218,158.79, 301,065.27 and 121,365.74

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Solution

The fourth proportional to 218,158.79, 301,065.27 and 121,365.74 is: 167,488.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,158.79 : 301,065.27 = 121,365.74 : x
  2. Step 2: Convert to fraction form
    218,158.79/301,065.27 = 121,365.74/x
  3. Step 3: Cross multiply
    218,158.79x = 301,065.27 × 121,365.74
  4. Step 4: Simplify right side
    218,158.79x = 36,539,009,750.06
  5. Step 5: Solve for x
    x = 36,539,009,750.06/218,158.79
  6. Step 6: Final answer
    x = 167,488.14

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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.