Home / 302,987,920.12-454,501,012.38-128,078,337.76

Finding the Fourth Proportional to 302,987,920.12, 454,501,012.38 and 128,078,337.76

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Solution

The fourth proportional to 302,987,920.12, 454,501,012.38 and 128,078,337.76 is: 192,125,594.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    302,987,920.12 : 454,501,012.38 = 128,078,337.76 : x
  2. Step 2: Convert to fraction form
    302,987,920.12/454,501,012.38 = 128,078,337.76/x
  3. Step 3: Cross multiply
    302,987,920.12x = 454,501,012.38 × 128,078,337.76
  4. Step 4: Simplify right side
    302,987,920.12x = 58,211,734,175,867,584
  5. Step 5: Solve for x
    x = 58,211,734,175,867,584/302,987,920.12
  6. Step 6: Final answer
    x = 192,125,594.16

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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.