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Finding the Fourth Proportional to 318,345.42, 439,309.52 and 175,102.32

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Solution

The fourth proportional to 318,345.42, 439,309.52 and 175,102.32 is: 241,637.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    318,345.42 : 439,309.52 = 175,102.32 : x
  2. Step 2: Convert to fraction form
    318,345.42/439,309.52 = 175,102.32/x
  3. Step 3: Cross multiply
    318,345.42x = 439,309.52 × 175,102.32
  4. Step 4: Simplify right side
    318,345.42x = 76,924,116,150.09
  5. Step 5: Solve for x
    x = 76,924,116,150.09/318,345.42
  6. Step 6: Final answer
    x = 241,637.26

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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.