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Finding the Fourth Proportional to 478,857.02, 660,802.46 and 261,060.98

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Solution

The fourth proportional to 478,857.02, 660,802.46 and 261,060.98 is: 360,253.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    478,857.02 : 660,802.46 = 261,060.98 : x
  2. Step 2: Convert to fraction form
    478,857.02/660,802.46 = 261,060.98/x
  3. Step 3: Cross multiply
    478,857.02x = 660,802.46 × 261,060.98
  4. Step 4: Simplify right side
    478,857.02x = 172,509,733,184.69
  5. Step 5: Solve for x
    x = 172,509,733,184.69/478,857.02
  6. Step 6: Final answer
    x = 360,253.12

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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.