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Finding the Fourth Proportional to 346,467.36, 478,115.28 and 195,578.40

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Solution

The fourth proportional to 346,467.36, 478,115.28 and 195,578.40 is: 269,892.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,467.36 : 478,115.28 = 195,578.40 : x
  2. Step 2: Convert to fraction form
    346,467.36/478,115.28 = 195,578.40/x
  3. Step 3: Cross multiply
    346,467.36x = 478,115.28 × 195,578.40
  4. Step 4: Simplify right side
    346,467.36x = 93,509,021,477.95
  5. Step 5: Solve for x
    x = 93,509,021,477.95/346,467.36
  6. Step 6: Final answer
    x = 269,892.73

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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.