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Finding the Fourth Proportional to 346,572.80, 478,311.90 and 210,628.88

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Solution

The fourth proportional to 346,572.80, 478,311.90 and 210,628.88 is: 290,693.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,572.80 : 478,311.90 = 210,628.88 : x
  2. Step 2: Convert to fraction form
    346,572.80/478,311.90 = 210,628.88/x
  3. Step 3: Cross multiply
    346,572.80x = 478,311.90 × 210,628.88
  4. Step 4: Simplify right side
    346,572.80x = 100,746,299,787.67
  5. Step 5: Solve for x
    x = 100,746,299,787.67/346,572.80
  6. Step 6: Final answer
    x = 290,693.04

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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.