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Finding the Fourth Proportional to 373,887, 515,816.40 and 230,397.12

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Solution

The fourth proportional to 373,887, 515,816.40 and 230,397.12 is: 317,857.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,887 : 515,816.40 = 230,397.12 : x
  2. Step 2: Convert to fraction form
    373,887/515,816.40 = 230,397.12/x
  3. Step 3: Cross multiply
    373,887x = 515,816.40 × 230,397.12
  4. Step 4: Simplify right side
    373,887x = 118,842,613,008.77
  5. Step 5: Solve for x
    x = 118,842,613,008.77/373,887
  6. Step 6: Final answer
    x = 317,857.03

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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.