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Finding the Fourth Proportional to 346,728.96, 478,519.92 and 210,752.64

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Solution

The fourth proportional to 346,728.96, 478,519.92 and 210,752.64 is: 290,859.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,728.96 : 478,519.92 = 210,752.64 : x
  2. Step 2: Convert to fraction form
    346,728.96/478,519.92 = 210,752.64/x
  3. Step 3: Cross multiply
    346,728.96x = 478,519.92 × 210,752.64
  4. Step 4: Simplify right side
    346,728.96x = 100,849,336,432.59
  5. Step 5: Solve for x
    x = 100,849,336,432.59/346,728.96
  6. Step 6: Final answer
    x = 290,859.28

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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.