Home / 285,116,319.72-393,460,521.24-154,736,127.72

Finding the Fourth Proportional to 285,116,319.72, 393,460,521.24 and 154,736,127.72

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Solution

The fourth proportional to 285,116,319.72, 393,460,521.24 and 154,736,127.72 is: 213,535,856.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    285,116,319.72 : 393,460,521.24 = 154,736,127.72 : x
  2. Step 2: Convert to fraction form
    285,116,319.72/393,460,521.24 = 154,736,127.72/x
  3. Step 3: Cross multiply
    285,116,319.72x = 393,460,521.24 × 154,736,127.72
  4. Step 4: Simplify right side
    285,116,319.72x = 60,882,557,467,370,416
  5. Step 5: Solve for x
    x = 60,882,557,467,370,416/285,116,319.72
  6. Step 6: Final answer
    x = 213,535,856.27

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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.