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Finding the Fourth Proportional to 448,018.87, 671,922.15 and 128,160.88

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Solution

The fourth proportional to 448,018.87, 671,922.15 and 128,160.88 is: 192,210.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    448,018.87 : 671,922.15 = 128,160.88 : x
  2. Step 2: Convert to fraction form
    448,018.87/671,922.15 = 128,160.88/x
  3. Step 3: Cross multiply
    448,018.87x = 671,922.15 × 128,160.88
  4. Step 4: Simplify right side
    448,018.87x = 86,114,134,035.49
  5. Step 5: Solve for x
    x = 86,114,134,035.49/448,018.87
  6. Step 6: Final answer
    x = 192,210.95

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1.5x scale

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.