Home / 289,709,998.60-434,564,997.90-257,965,256.20

Finding the Fourth Proportional to 289,709,998.60, 434,564,997.90 and 257,965,256.20

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Solution

The fourth proportional to 289,709,998.60, 434,564,997.90 and 257,965,256.20 is: 386,947,884.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,709,998.60 : 434,564,997.90 = 257,965,256.20 : x
  2. Step 2: Convert to fraction form
    289,709,998.60/434,564,997.90 = 257,965,256.20/x
  3. Step 3: Cross multiply
    289,709,998.60x = 434,564,997.90 × 257,965,256.20
  4. Step 4: Simplify right side
    289,709,998.60x = 112,102,671,018,825,952
  5. Step 5: Solve for x
    x = 112,102,671,018,825,952/289,709,998.60
  6. Step 6: Final answer
    x = 386,947,884.30

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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.