Home / 313,918,518.72-433,204,117.92-172,786,721.64

Finding the Fourth Proportional to 313,918,518.72, 433,204,117.92 and 172,786,721.64

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Solution

The fourth proportional to 313,918,518.72, 433,204,117.92 and 172,786,721.64 is: 238,443,783.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,918,518.72 : 433,204,117.92 = 172,786,721.64 : x
  2. Step 2: Convert to fraction form
    313,918,518.72/433,204,117.92 = 172,786,721.64/x
  3. Step 3: Cross multiply
    313,918,518.72x = 433,204,117.92 × 172,786,721.64
  4. Step 4: Simplify right side
    313,918,518.72x = 74,851,919,336,344,768
  5. Step 5: Solve for x
    x = 74,851,919,336,344,768/313,918,518.72
  6. Step 6: Final answer
    x = 238,443,783.57

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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.