Home / 319,302,003.80-478,953,005.70-288,691,002.20

Finding the Fourth Proportional to 319,302,003.80, 478,953,005.70 and 288,691,002.20

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Solution

The fourth proportional to 319,302,003.80, 478,953,005.70 and 288,691,002.20 is: 433,036,503.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,302,003.80 : 478,953,005.70 = 288,691,002.20 : x
  2. Step 2: Convert to fraction form
    319,302,003.80/478,953,005.70 = 288,691,002.20/x
  3. Step 3: Cross multiply
    319,302,003.80x = 478,953,005.70 × 288,691,002.20
  4. Step 4: Simplify right side
    319,302,003.80x = 138,269,423,222,235,296
  5. Step 5: Solve for x
    x = 138,269,423,222,235,296/319,302,003.80
  6. Step 6: Final answer
    x = 433,036,503.30

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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.