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Finding the Fourth Proportional to 346,956.48, 478,818 and 210,968.28

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Solution

The fourth proportional to 346,956.48, 478,818 and 210,968.28 is: 291,147.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,956.48 : 478,818 = 210,968.28 : x
  2. Step 2: Convert to fraction form
    346,956.48/478,818 = 210,968.28/x
  3. Step 3: Cross multiply
    346,956.48x = 478,818 × 210,968.28
  4. Step 4: Simplify right side
    346,956.48x = 101,015,409,893.04
  5. Step 5: Solve for x
    x = 101,015,409,893.04/346,956.48
  6. Step 6: Final answer
    x = 291,147.21

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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.