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Finding the Fourth Proportional to 378,655.60, 567,983.40 and 112,457.20

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Solution

The fourth proportional to 378,655.60, 567,983.40 and 112,457.20 is: 168,685.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    378,655.60 : 567,983.40 = 112,457.20 : x
  2. Step 2: Convert to fraction form
    378,655.60/567,983.40 = 112,457.20/x
  3. Step 3: Cross multiply
    378,655.60x = 567,983.40 × 112,457.20
  4. Step 4: Simplify right side
    378,655.60x = 63,873,822,810.48
  5. Step 5: Solve for x
    x = 63,873,822,810.48/378,655.60
  6. Step 6: Final answer
    x = 168,685.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.