Home / 209,258.48-288,782.40-113,771.76

Finding the Fourth Proportional to 209,258.48, 288,782.40 and 113,771.76

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Solution

The fourth proportional to 209,258.48, 288,782.40 and 113,771.76 is: 157,008.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,258.48 : 288,782.40 = 113,771.76 : x
  2. Step 2: Convert to fraction form
    209,258.48/288,782.40 = 113,771.76/x
  3. Step 3: Cross multiply
    209,258.48x = 288,782.40 × 113,771.76
  4. Step 4: Simplify right side
    209,258.48x = 32,855,281,905.02
  5. Step 5: Solve for x
    x = 32,855,281,905.02/209,258.48
  6. Step 6: Final answer
    x = 157,008.13

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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.