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Finding the Fourth Proportional to 478,857.88, 660,803.97 and 261,061.84

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Solution

The fourth proportional to 478,857.88, 660,803.97 and 261,061.84 is: 360,254.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,857.88 : 660,803.97 = 261,061.84 : x
  2. Step 2: Convert to fraction form
    478,857.88/660,803.97 = 261,061.84/x
  3. Step 3: Cross multiply
    478,857.88x = 660,803.97 × 261,061.84
  4. Step 4: Simplify right side
    478,857.88x = 172,510,700,287.51
  5. Step 5: Solve for x
    x = 172,510,700,287.51/478,857.88
  6. Step 6: Final answer
    x = 360,254.49

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1.5x scale

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.