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Finding the Fourth Proportional to 231,030.40, 346,480.80 and 73,307.20

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Solution

The fourth proportional to 231,030.40, 346,480.80 and 73,307.20 is: 109,940.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,030.40 : 346,480.80 = 73,307.20 : x
  2. Step 2: Convert to fraction form
    231,030.40/346,480.80 = 73,307.20/x
  3. Step 3: Cross multiply
    231,030.40x = 346,480.80 × 73,307.20
  4. Step 4: Simplify right side
    231,030.40x = 25,399,537,301.76
  5. Step 5: Solve for x
    x = 25,399,537,301.76/231,030.40
  6. Step 6: Final answer
    x = 109,940.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.