Home / 256,643,721.60-384,965,582.40-154,607,049.60

Finding the Fourth Proportional to 256,643,721.60, 384,965,582.40 and 154,607,049.60

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Solution

The fourth proportional to 256,643,721.60, 384,965,582.40 and 154,607,049.60 is: 231,910,574.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    256,643,721.60 : 384,965,582.40 = 154,607,049.60 : x
  2. Step 2: Convert to fraction form
    256,643,721.60/384,965,582.40 = 154,607,049.60/x
  3. Step 3: Cross multiply
    256,643,721.60x = 384,965,582.40 × 154,607,049.60
  4. Step 4: Simplify right side
    256,643,721.60x = 59,518,392,892,409,680
  5. Step 5: Solve for x
    x = 59,518,392,892,409,680/256,643,721.60
  6. Step 6: Final answer
    x = 231,910,574.40

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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.