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Finding the Fourth Proportional to 315,437.41, 435,303.44 and 172,197.42

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Solution

The fourth proportional to 315,437.41, 435,303.44 and 172,197.42 is: 237,632.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    315,437.41 : 435,303.44 = 172,197.42 : x
  2. Step 2: Convert to fraction form
    315,437.41/435,303.44 = 172,197.42/x
  3. Step 3: Cross multiply
    315,437.41x = 435,303.44 × 172,197.42
  4. Step 4: Simplify right side
    315,437.41x = 74,958,129,285.12
  5. Step 5: Solve for x
    x = 74,958,129,285.12/315,437.41
  6. Step 6: Final answer
    x = 237,632.34

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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.