Home / 390,498,904.54-538,896,719.10-214,285,358.62

Finding the Fourth Proportional to 390,498,904.54, 538,896,719.10 and 214,285,358.62

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Solution

The fourth proportional to 390,498,904.54, 538,896,719.10 and 214,285,358.62 is: 295,718,311.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    390,498,904.54 : 538,896,719.10 = 214,285,358.62 : x
  2. Step 2: Convert to fraction form
    390,498,904.54/538,896,719.10 = 214,285,358.62/x
  3. Step 3: Cross multiply
    390,498,904.54x = 538,896,719.10 × 214,285,358.62
  4. Step 4: Simplify right side
    390,498,904.54x = 115,477,676,711,484,912
  5. Step 5: Solve for x
    x = 115,477,676,711,484,912/390,498,904.54
  6. Step 6: Final answer
    x = 295,718,311.55

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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.