Home / 285,144,030.72-393,488,236.80-154,761,039.36

Finding the Fourth Proportional to 285,144,030.72, 393,488,236.80 and 154,761,039.36

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Solution

The fourth proportional to 285,144,030.72, 393,488,236.80 and 154,761,039.36 is: 213,564,521.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,144,030.72 : 393,488,236.80 = 154,761,039.36 : x
  2. Step 2: Convert to fraction form
    285,144,030.72/393,488,236.80 = 154,761,039.36/x
  3. Step 3: Cross multiply
    285,144,030.72x = 393,488,236.80 × 154,761,039.36
  4. Step 4: Simplify right side
    285,144,030.72x = 60,896,648,503,101,808
  5. Step 5: Solve for x
    x = 60,896,648,503,101,808/285,144,030.72
  6. Step 6: Final answer
    x = 213,564,521.58

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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.