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Finding the Fourth Proportional to 346,688.80, 478,652.88 and 283,179.04

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Solution

The fourth proportional to 346,688.80, 478,652.88 and 283,179.04 is: 390,968.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,688.80 : 478,652.88 = 283,179.04 : x
  2. Step 2: Convert to fraction form
    346,688.80/478,652.88 = 283,179.04/x
  3. Step 3: Cross multiply
    346,688.80x = 478,652.88 × 283,179.04
  4. Step 4: Simplify right side
    346,688.80x = 135,544,463,051.64
  5. Step 5: Solve for x
    x = 135,544,463,051.64/346,688.80
  6. Step 6: Final answer
    x = 390,968.68

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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.